Surely you would feel very differently if you were born in a slightly different time in the not-so-distant past. How do you imagine the first "actual Nazis" came to the position of power where they could slaughter thousands of your community with impunity for nearly a generation? How do you imagine it couldn't happen again, if not in your lifetime, at some point in humanity's timeline? If not regarding Jews, regarding some new community?

Do you really think it would be avoided simply by more people taking "don't let words affect you" to heart [ * ]?

[ * ] (assuming, quite unreasonably, that that's actually something that could happen at a societal level)