It is telling that almost all these events happen in a gun free zone. It is reported that the teachers wanted to be allowed to carry but were denied. note the shooter was taken out by an ICE agent, (a supposed racist bad guy) We know little of the actual motives, means, or trigger.
Do not confuse the blm crap with getting off the plantation. Most protesters were whites who never gave done grunt labor. The rest were thugs who are decried by ALL normal humans.