Obviously the most effective way to fight fascism is to elect fascist government and wait until fascists show their incompetence as a governing party, while established institutions and system of checks and balances is ensuring the integrity of next elections, so the fascists will be gone once and for all after a single term.

And Facebook and Xitter are nothing in comparison with TT. At least in Poland they are pushing „fun and trendy” far right, „common sense” far right and russian talking points into every feed. As far as I understand this is also true for most of the Europe.