Not the OP, but they're possibly referring to hatred of "others", a group far enough geographically or away from social acceptance, that people don't see any issues in the future with holding aggressive / intolerant views on them now.

I think a lot of social acceptance today is a mask. It's something people put on to virtue signal in the age of social media, and they expand their appearance of tolerance as wide as is currently socially acceptable to avoid anything being used against them in the future. You can see these masks slip occasionally.

My wife was originally born in Russia. She's lived outside the country for over 2 decades, is as little aligned with that country's politics as you can be, and is generally a very likeable charismatic person.

I've seen some incredibly "tolerant" and "accepting" people (of religious, ethnic, sexual, nationality aspects) who are unaware of her nationality spurt out the most vitriolic opinions of Russians (mostly when something relevant appears in the news), sometimes pretexted with "all" or "majority". In the environment these "tolerant" people live in, Russians are an acceptable group to hate en-masse. Many other nationalities also apply.

Many times she doesn't say anything, but when she has, you can see the mask going on in real-time. "Not all", "not you", "except you", backtracking and saving face.