the point is't "all blm people are EVUL" it's "blm as an idealogy partly includes "attack those who aren't part of the idealogy" as seen by the underlying "if you aren't with us you're against us" belief. even if that wasn't true, blm shouldn't be used as "cover" for people assaulting others, being part of blm isn't a reason to lob concrete at someone's head.
no but being part of blm isn't a reason to be charged for as a domestic terrorist especially if you aren't throwing concrete at someone's head. it's a loosely organized movement, and no single person on the planet speaks for or represents blm save the 2-3 people organizing it. if they call for white people to be beaten in the streets and people go out and do it it's not terrorism, it's random people voluntarily going out and committing crimes and using their ideology to rationalize it. legally they should be treated like a criminal who threw concrete, not a terrorist who is out to kill all white people. these are two completely separate charges and one is infinitely more severe
certain black panther splinter cells could be considered terrorist organizations because they were actually organized. people would sit down in a room and plan out attacks or civil disobedience and everyone in the room was an accomplice. but going on facebook and saying 'hey lets all kill white people' is just a suggestion and anyone who follows it is acting upon their own free will and is not organized. they aren't terrorists, and blm isn't an organization. claiming that you acted on behalf of blm won't fly in court and the organizers of blm could easily say they have no connection with the perp.
if blm is considered a terrorist organization then the 80% of people who support blm for its civil rights ideology (including me) will now be wanted terrorists and could be arrested, all because some minority of supporters decided to be dipstuffs. not only is it a waste of state & federal money and time, but it also infringes heavily on the constitutional rights of some million americans who aren't going out on the street and throwing concrete milkshakes at white people.