Never forget: The Democrat Party was founded on racism: its sole purpose for formation was to perpetuate slavery of blacks. It fomented the Civil War in order to protect slavery. When it lost the war, it formed Jim Crow segregation and the KKK, both of which persisted for roughly a century. Then, in response to the Republican Civil Rights Act of 1964, LBJ created the welfare plan with the Orwellian name, War on Poverty, to perpetuate blacks in poverty and also make them perpetually dependent Democrats... and the blacks fell for it, even making some of their own blacks into their racist Democrat oppressors. The 60's Leftists were first to shriek "white privilege" while calling white babies "pigs" needing termination. Racism, the root of the Democrat Party, became a Leftist tool and it has been wielded with characteristic Leftist violence. Trump will be claimed as inspiration for all sorts of summer-time "racial" protest-violence intended to shut up the opposition by denying them speech venues, as happened in Chicago.
The violence against freedom (speech and assembly) is wholly predictable, because it is in the genetics of the Left, and has always been there historically. It is the party of race tyrants. It will not change now.
Black Lives Matter, otoh is purely racist against all whites; the intent is to instill a new cultural standard for black ghettos: drugs, gangs, theft and killing are now black cultural standards which whites may not interfere with or try to control. The new standard is black separatism, i.e., the new segregation into a subnation which is inaccessible to whites (or browns). This already exists in certain blue model cities in the USA, where whites dare not go, and cops dare not arrest.