To answer your initial question I think I need to define riot. Per your subject line you stated "what will you do when the riot reaches your neighborhood". Merriam-Webster defines riot as a violent public disorder. Your second line described something closer to an organized protest (i.e. non-violent).
I think ultimately, all posturing aside, one must decide well in advance as to their tactics for peace...and perhaps do a little research on mob mentality. I agree where the posters have said that you must meet force with force. My best advice is to get to know your neighbors. If all of your neighbors are standing on their front porch in solidarity there is far less of a temptation for an unruly crowd to start trouble; traditionally that is held for the weak or those unable to defend themselves. If you show weakness you are the best target. Take your mind back in time to the place where you were in the most fear you've ever known, figure out how to manage that and work with the human response to fear and channel that into clarity and purpose. Decide today where your battle line is, find out which neighbors are going to partner with you in that purpose, and have a plan. In all likeliness you will never need that plan, but you will be prepared nonetheless. Perhaps that will bring you some peace during this upheaval.
I think ultimately, all posturing aside, one must decide well in advance as to their tactics for peace...and perhaps do a little research on mob mentality. I agree where the posters have said that you must meet force with force. My best advice is to get to know your neighbors. If all of your neighbors are standing on their front porch in solidarity there is far less of a temptation for an unruly crowd to start trouble; traditionally that is held for the weak or those unable to defend themselves. If you show weakness you are the best target. Take your mind back in time to the place where you were in the most fear you've ever known, figure out how to manage that and work with the human response to fear and channel that into clarity and purpose. Decide today where your battle line is, find out which neighbors are going to partner with you in that purpose, and have a plan. In all likeliness you will never need that plan, but you will be prepared nonetheless. Perhaps that will bring you some peace during this upheaval.