The use of the term “black males” is interesting and probably heretical. I thought that “teens” was the required euphemism, or has “teens” been overused to the point of itself becoming an unacceptable “word of derision?”
Clearly, those two white racists were provoking those young afro-americans who were obviously on their way to college classes or to volunteer work to help the disabled. If you look closely, the racist woman attacks the young men in an attempt to steal their wallets while the young man falls, attempting to trip them. Notice how the police run by hoping to avoid getting beaten by these two caucasian racists.