To people saying he has the right to express himself but don't align with his views : he'll use that argument to cause as much harm as he can.
This. Fascists love the "freedom of speech" argument when it benefits them to push their agenda, which is to case harm and spread their agenda. Once they have power, they will take that away. As Goebbels once said:
We enter parliament in order to supply ourselves, in the arsenal of democracy, with its own weapons. If democracy is so stupid as to give us free tickets and salaries for this bear's work, that is its affair. We do not come as friends, nor even as neutrals. We come as enemies. As the wolf bursts into the flock, so we come.
Do not give them that power.