I'm not sure if I'll be able to attend but in my opinion the situation is serious enough that it would be very smart/wise to begin thinking of MLK and discussing some genuine 'Non-Violence' training.
There is a lot that can be learned from those who have gone before.
I hate to think of people out there without some preparation, to at least have thought about how to de-escalate violent situations, how to care of one another, etc.
I would love to see people getting together with friends and discussing these things. For example most people don't really think about body language and the role it can play in tense situations. Police have their own way of reading body language, are we aware of how a policeman reacts when we are talking to them with hands in pockets? How do you make a strong & committed political statement through non-violent disipline? etc..
Just some in depth discussion of various scenarios could be helpful. Perhaps even finding an experienced 'non-violence' trainer.
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edit..the first thing that came up on Google, there is a wealth of material out there.
nonviolence help: links... training and websites which promote nonviolence. There are also some links to sites which document the lives and work of Mahatma Gandhi and Martin Luther King. ...
http://nonviolencehelp.tripod.com/links.html