Over 93% of BLM protests were peaceful, according to an analysis by ACLED and Princeton University:

https://acleddata.com/2020/09/03/demonstrations-political-violence-in-america-new-data-for-summer-2020/

I've summarized a few key points. I didn't get everything though, so read the full thing when you can!

#BlackLivesMatter

(P) = Paraphrase
(Q) = Quote

Over 93% of the 7,775+ BLM related demonstrations following George Floyd's murder were peaceful (P)

BLM demonstrations have slowed down, but continue with no immediate signs of stopping (P)

Violent demonstrations are largely confined to specific blocks, rather than dispersed throughout the city (Q)

Despite this, 42% of poll respondents believe 'most BLM protesters are violent' (P)

Research from the University of Washington indicates that this disparity stems from political orientation and biased media framing (Q)

Disinformation campaigns which aim to villainize the BLM movement are especially effective on the white population (P)

In some cases where demonstrations did turn violent, there are reports of agent provocateurs- or infiltrators- instigating the violence (Q)

For example, a man with an umbrella- dubbed the 'umbrella man' by the media and later identified as a member of the Hells Angels linked to the Aryan Cowboys, a white supremacist prison and street gang- was seen smashing store windows (Q)

This incident was one of the first reports of destructive activity that day, and generated tension which ultimately sparked an outbreak of violence and looting (P)

Data shows that authorities stationed at demonstrations are prone to use force, and disproportionately more often in regards to the BLM movement (P)

More than 93% of BLM demonstrations have been peaceful, yet 9% have been met with government intervention, compared to 3% of all other demonstrations (P)

Authorities have used less lethal force- such as impact munitions, tear gas, rubber bullets, beating demonstrators with batons, and pepper spray- in over 54% of the demonstrations where present (P)

(Picture taken by https://twitter.com/MrOlmos?s=20 )

In some contexts, like Seattle, Washington, and Portland, Oregon, the heavy-handed police response appears to have inflamed tensions and increased the risk of violent escalation (Q)

The Capital Hill Occupied Protest (CHOP) zone, independent of police and government control immediately showed a significant reduction of violent demonstrations- down to zero- where the disbandment of CHOP saw an increase in violent demonstrations (P)

Prior to authority deployment, over 83% of demonstrations in Oregon were non-violent. Post-deployment, the percentage of violent demonstrations has risen from under 17% to 42%, suggesting that the federal response has only aggravated unrest (Q)

Journalists have faced "an unprecedented outbreak of violence" all around the country, primarily from government forces (P)

Militias and other non-state actors are increasingly engaging with demonstrators directly, this includes car ramming attacks performed by KKK members, state forces, and unaffiliated perpetrators (P)

Non state groups are becoming becoming more
active and assertive in regards to BLM demonstrations. These groups include organizations and militias from both left and right, such as: Antifa, the NFAC, the NMCG, the Patriot Front, the Proud Boys, and the KKK, among others (P)

Reports that police not only tolerate the presence of certain armed individuals at demonstrations, but in some cases actively encourage their involvement suggest this trend will continue (Q)

End of Thread.

Those were just a few points from the analysis I found particularly interesting, but there's a ton more data, graphs, and compelling information in there.

Definitely give it a read when you've got time