Whether personality and beliefs characteristics can change is quite the debate. Fair evidence says they can.
I know folks who were antigun and have come around. Folks who were discriminatory on race or gender and changed their views.
One thing though, the typical insulting rants and hate from a subset of the RKBA are the worst possible strategy. It make rile up the base to make more contributions but it won't budge folks whose ideas you want to change.