The hard part will be convincing them that people they don’t like deserve basic human rights. The right wing religious propaganda has really taken hold of them in that regard.
remember when mandela actually became president of south africa after spending 27 years in prison, he made a speech and said something like “the boers are no longer our enemy, they are our countrymen.” Basically, they are our enemy now, because they’ve fallen victim to the propaganda that’s been fed to them by the television they watch, the online communities they frequent, the churches they go to and the radio personalities they listen to. But if one can reach out to them, talk to them and get them to listen and hear, then it might be possible to deprogram them from those hateful stances they hold against people who are not like them.
For example, one can try to talk to them about immigration by asking why they don’t like immigration. they might respond like “the immigrants take our jobs”, which is the lie that is told to them so that they want to fight other working class people instead of focusing that fight on the people who actually are responsible for their suffering: the wealthy.