I genuinely don't understand what your mental model of people like Rupert Lowe is. "A man who wants nothing more than to create hatred and division." Do you think he just gets up each morning, twirls his moustache and thinks "how can I stir up hatred today, mwahahaha"?
Or do you think he earnestly believes that there is a serious problem with immigrant criminals (I include 2nd/3rd gen non-native; intermarriage is unusual in these communities) committing horrific crimes justified by their own religious & racial animus, and he is personally open to a range of solutions to the problem, including ones which may be more extreme than you personally are okay with?
You can disagree on his proposed solutions (deportations, immigration bans, death penalty etc) but why do people act like their political opponents are just these cartoon villains with no genuine motivation?