Telegram is a useful tool for organizing. "Channels" are different from groups. Channels are where announcements are made, groups are where discussions happen (and often they are closed to the public). According to Telegram's statement, they are enforcing their terms of service. Not one of the nearly dozen groups/channels I'm in have been banned (they don't violate the TOS). Only leftist extremists (including the media) are saying that MAGA supporters are terrorists.