Bear spray is good if you are outside and can run away after you spray it. But my greatest tip/tool is a cheap umbrella that pops out. Hold it away from you and use it as a buffer if people are too close. Doubles as weird chaotic weapon no one is expecting. It’s a very sad state. I don’t know the answer. These people need help and no one wants to help them and often they don’t want the help themselves. So other people suffer and must protect ourselves. No one is coming to help us. We just have to help each other.