it's easy to be communist of you only touched it online
This is almost certainly the case, these kids read about the ideals of communism and think it sounds great, and they know about how things are in the USA and think that's bad. Two fair assessments, but they then deduce that the because capitalist America is bad, then Soviet Russia "communist" China must be good, ignoring the fact that every person who survived/escaped those reigemes described them as hell.