I don't want to be fucking hearing about riots from people that plan to sit behind their keyboards in their nice warm homes. If you're really that pissed off, and I know I am, you need to draw up some signs and get down to your local capital building or wherever protests are likely to take place and do something about it.
When get down down there and start to realize how futile rioting would be, and how risky it to your own safety, then I'm sure you'd change your mind. I mean i'm fucking pissed, and I fully understand the want to riot, but that's just not what you should do. This is doubly true if you're white and have the unfair privilege of having cops give you the benefit of the doubt as black people get punished for your selfishness.
Likely there'll be others there that you can talk through your frustrations with, and make contacts for you to do what you can to help in the future. Even if you're the only one there, that just proves people don't know or care enough about it, and you can do what you can to get people on your side.
I know I don't give a shit if I'm the only one out there. I just know I have to do something, and hope others do the same.