For three days in Detroit, hundreds of protesters have peacefully marched, and later — at night — some have violently clashed with police.


Organizers said they expected to return Monday and continue their efforts.


And in a conference call Monday morning with state leaders, President Donald Trump urged them to dominate protesters, arrest and prosecute them. Afterward, Gov. Gretchen Whitmer said the president is "determined to sow the seeds of hatred and division," and fears his approach will lead to more violence.


Here's what we know so far about the protests:


Detroit's marches are among several worldwide following the death of 46-year-old George Floyd, a black man. Floyd died after a white police officer knelt on his neck during an arrest in Minneapolis.


In Detroit, the first protest on Friday began peacefully at Detroit Public Safety headquarters. Later that evening, violence erupted past midnight as fighting between police and demonstrators broke out.


In the midst of the melee, a 21-year-old Eastpointe man was fatally shot, although police later said the slaying appeared unrelated to the protest. Authorities are still investigating and looking for the shooting suspect.


Saturday, hundreds more peacefully marched from the Detroit Police headquarters to Mexicantown — and back again, and then seemingly dispersed; only to regroup downtown after dark with an influx of new protesters armed against police with bricks, railroad spikes and fireworks.


The night ended after police deployed tear gas and fired rubber bullets.


By Sunday, city officials enacted an 8 p.m. curfew, and again, the largest crowd of protesters peacefully marched through the streets of downtown Detroit, ending up at the police headquarters.


Protesters, however, ignored the curfew. And about 40 minutes later, after several warnings, officers acted swiftly to disperse the crowd with tear gas and arrest protesters who refused to leave.


When is the curfew?


Detroit Mayor Mike Duggan said the ongoing Detroit curfew, from 8 p.m. to 5 a.m., is a necessary step to quell the protest violence and requires Detroiters to stay home unless there is a medical emergency or they are going to or from work.


Duggan added it will remain in place until the police chief feels it is safe to lift it.


How many arrests have there been?


Friday night's protests led to 60 arrests, with only 23 people residing inside the city.


Saturday, Detroit police arrested 84 people, 21 of whom reside in Detroit. Three were from other states, one from Ohio and two from Tennessee. Police said the majority of those arrested — 61 — live in the metro Detroit area.


Sunday's arrests totals were not released yet.


Who is organizing these protests?


Toward the end of Sunday night's protest, Tristan Taylor identified himself as an organizer and announced to the crowd that Detroit Police Chief Craig let it be known he may consider dropping charges against those arrested.


Taylor proposed that Craig — and Detroit Mayor Duggan — join the march and discuss the issues in public with all the protesters.


Detroit police have not yet confirmed whether this is true. But Craig, in interviews Sunday, said that he was willing to meet with anyone, but added that some people are seeking only to do damage to Detroit.


Monday, Taylor posted on social media that he "won't be able to be out there today, but the movement is bigger than any one person."


He also named BAMN, short for the Coalition to Defend Affirmative Action, Integration & Immigrant Rights, and Fight for Equality By Any Means Necessary, as an organization that "has played a key role" in his political development, adding it "will do the damn thing on these streets today with everyone!"


He also decried police Sunday, calling them "just bullies intent to do harm."


Nationwide, where are the other protests?


Demonstrations across the country, not just Detroit, devolved into unrest this weekend. Police cars and government buildings burned, the National Guard was deployed, and some of the country's largest cities instituted curfews.


By Sunday, USA Today reported, more than 1,400 people have been arrested in 16 cities since Thursday, with more than 500 of those in Los Angeles.


By one count protests have been held in at least 140 cities nationwide, including:



Atlanta, where protesters damaged the CNN center and set a car on fire.
Cincinnati, where protesters clashed with police as night fell.
Dallas, where a grocery store was looted and police arrested nearly 100.
Denver, where a car crashed into police and weapons were confiscated.
Indianapolis, where one was killed and at least two more were shot.
Minneapolis, where buildings were set ablaze, police cleared protesters.
Nashville, where a courthouse and City Hall was set on fire.
New York City, where a police vehicle drove into a crowd of protesters.
Reno, Nevada, where there also was a City Hall fire.
San Francisco, where protesters lit fireworks outside the mayor’s apartment.
Seattle, where vehicles were burned and a Nordstrom was looted.

Where were protests in Michigan?


In addition to Detroit, there also have been rallies in Flint Township, Ferndale, Ann Arbor, Kalamazoo and Lansing. Those were mostly peaceful events. And in Flint Township, Genesee County Sheriff Chris Swanson joined the march.


Saturday, a protest in Grand Rapids turned even more violent than in Detroit with demonstrators there breaking windows and setting fire to cars and government offices.


In Grand Rapids, the protest was especially emotional because Breonna Taylor — a 26-year-old African-American emergency room technician killed by police in Louisville, Ky., in March — was a Grand Rapids native.


What is President Trump doing?


For his protection, Trump was moved to the White House's underground bunker Friday night to briefly shelter in place as a protest grew outside the Executive Mansion.


He also tweeted on Friday that "looting leads to shooting," a phrase that dates back to the late 1960s, when Miami's white Police Chief Walter Headley threatened, "When the looting starts, the shooting starts."


Trump later denied he intended the phrase as a threat.


Are the protests really global now?


During one of the many protest speeches Sunday, a speaker called the demonstrations an "international movement." The rallies are global, with protests taking place as far away as Japan, even though the impetus for them was Floyd's death in the Midwest of the United States.


This past weekend, USA Today reported, thousands of people gathered across central London and other international cities to protest Floyd's killing. They protested in Manchester, England; in Berlin, next to the German city's Brandenburg Gate; in Toronto and Vancouver, and in Jerusalem and Tel Aviv, Israel.


The mass protests worldwide against police brutality, the New York Times reported Monday, is "reviving concerns that America is abandoning its traditional role as a defender of human rights."


What don't we know yet about the protests?


It's unclear how many of the Detroit protests are made up of Detroiters — or how many of the peaceful protesters were also involved in the violence that has ensued mostly after dark after the formal protest ends.


City officials and some community leaders have suggested that the violence is being fueled by organized groups from outside Detroit, and may even be from other states.


Meanwhile Trump, in tweets, suggested that ANTIFA, a group of loosely affiliated activists, and the "radical left," is behind the protests; while others, including some protesters, have suggested that white supremacists and far-right groups are behind the protest violence.


Are the protests affecting the spread of coronavirus?


It is unclear how the mass gatherings of people residing throughout the metro Detroit area will affect the spread of coronavirus.


While many protesters are wearing masks, not everyone is, and they are not maintaining social distancing guidelines. The governor's stay-at-home order was aimed at prohibiting sporting and other events that could contribute to the pandemic.


When will the protests end?


It is unclear how long the protests will last.


Organizers made a plea to protesters Sunday to prepare for a sustained effort, that didn't last just a day or a week, but would be ongoing and continue the fight "our grandparents started."