@mwl yes. Ive been a self-protection "teacher" at many protests and non-violent actions in many collectives. If you so not have a lawyer put instead the number of your legal tutor (if you have good relation of course) or someone else that you trust. They take advantage if they see you have no support of any type. Also. Please. Learn how to avoid damage when police starts lifting you etc. Dont oppose resistance with violence ever, just stay rock but making it easy for them to "transport" you