It might be prudent to pre-arrange a “rally point” at what seems to be an innocuous site (like a fan site for a TV show or movie) and there PM each other and get into political discussion. Start political threads at other (friendly) forums. Have back-up sites handy to that one in case TPTB get wise to it again. One step ahead of the sheriff!
“Have back-up sites handy to that one in case TPTB get wise to it again.”
Also have a backup laptop with an entirely different ISP connected with it. Use it for all non-political stuff so it won’t be identified or targeted by the Brown Shirts. Then when the SHTF, move to that one and the innocuous chat sites to communicate.