The most important reason for staying in the ECHR is that it protects citizens against the state.I am not so sure. You might be surprised how little inherent protection there is under British law. As far as I know, if we leave the ECHR and the other international treaties mentioned, such as the one banning torture, then there would be very little protection left. Parliament has the right to make any laws it wants. If Reform wanted to pass a law making torture legal in the UK and had the numbers in Parliament, I don't what would stop it being legal.
If Farage wants to deport 600,000 people, how many of those will be British citizens or partners and family of British citizens.
There are plenty of stories of people who voted for Trump who have now had their husband or wife deported.

