I agree with the comments so far - I fail to see how showing disrespect for the flag and anthem is at all a protest at whatever the current explanation is
Is it police brutality today or is it protesting history in general in which case ... FFS, what do you think is going to happen? Dr Who will go back in time and make everything right?
Most people see the moment as respecting the country and particularly those who serve in the military.
The problem with the "protesting killing of black men by police" is that it's a false narrative based on extremely selective media stories and hype. So how can that ever be fixed? As it is, it's just divisive and intentionally disrespectful and insulting to many people.
They are also idiots and playing straight into Trumps hands - the left and the media can't help but fixate on anything he does or says and immediately object, whatever it is, without thinking through the implications or the end-game.
Kneelers: exactly what is it that you want to see change?
Vague notions of "make society better" aren't achievable without specific goals.