"hurr durr don't be a single issue voter, genocide is totally something unimportant hurr durr"

Lol, that's not how this works. Unless you plan to either take away a shit ton of people's voting rights, or to just kill them, you have to "play the crowd".

That's just how this shit works. As long as enough "deplorables" exists to tip the scales, you have to address them somehow, not pretend they don't matter because they're wrong.

Obama understood that there's a massive amount of the voterbase unhappy with how things were, and campaigned on a generic idea of change, appealing to frustrated people on both sides of the aisle.

Talking down to people or calling them names isn't a good strategy to get them to cooperate.