@elevated_subways
Just wondering, why do you think this is happening so much recently? What social changes have occurred?
From an analysis as a Criminologist (Master of Science), I'm going to look at some quotes by Barack Obama.
When he was running for President, when asked if he was concerned about Republican attacks upon him, he said, "If they bring a knife to the fight, we bring a gun." That set the tone for many blacks because they heard the quote, but not the context.
When his friend was arrested for failure to cooperate with police, he said, "The Cambridge police acted stupidly in arresting somebody when there was already proof that they were in their own home. . . . What I think we know โ separate and apart from this incident โ is that there is a long history in their country of African-Americans and Latinos being stopped by law enforcement disproportionately, and that's just a fact.'
In referring to his own grandmother (remember, Obama's mother was white), he said, "The point I was making was not that Grandmother harbors any racial animosity. She doesn't. But she is a typical white person..."
And just to show how he really felt, he also said, "I don't believe it is possible to transcend race in this country. Race is a factor in this society. The legacy of Jim Crow and slavery has not gone away. It is not an accident that African-Americans experience high crime rates, are poor, and have less wealth. It is a direct result of our racial history."
Of course, the minister at the church he attended, Jeremiah Wright, wasn't afraid of saying things, as Obama quoted, "It is this world, a world where cruise ships throw away more food in a day than most residents of Port-au-Prince see in a year, where white folks' greed runs a world in need, apartheid in one hemisphere, apathy in another hemisphere...That's the world! On which hope sits!"
Here's a reality check: The US had pretty much worked its way through the racial problem prior to his election. By his words and actions, as well as his willing accomplices in the liberal media (please, don't anyone say they're not, everyone knows better), he did more to destroy relations between the communities and the police, and to increase the seeds of racism in the United States.
Factual numbers: Blacks make up 13% of the population of the United States. Blacks commit 51% of all homicides and 37% of all violent crime in the United States.
Two quotes from LBJ: "These Negroes, they're getting pretty uppity these days and that's a problem for us since they've got something now they never had before, the political pull to back up their uppityness. Now we've got to do something about this, we've got to give them a little something, just enough to quiet them down, not enough to make a difference."
And is discussion regarding the Civil Rights Act, he said, "I'll have those niggers voting Democratic for 200 years." (Before you run off to Snopes and go, no evidence - it's from a book by a steward on Air Force One that had a lot more info about LBJ right - like how he liked to walk around nude even with people present - and Snopes lost all credibility this week when they had to admit their founder was making things up.)
So, my conclusion is that through his contempt for the white majority of the United States, as well as his contempt for police attempting to do their job, fit in with the principles espoused by other leaders of his political party and through media bias, engendered ... well, everything we saw last summer, from the Antifa & BLM riots, to the recent police shooting of Ella French in Chicago. (Where neither the Mayor NOR the Police Commissioner said her name right at her memorial services, NOR would the Police Commissioner allow the traditional playing of the bagpipes at the service, saying, 'We don't have time for this shit.')