There are many defenses for generalizations but they're all based on ethical laziness. For example, there is a growing number of people who dislike people from Russia due to them being in the news, something I probably don't help. It would be one thing to speculate to oneself, to wonder if Russia is the Florida of the Asian world for a reason, or that maybe their ethnicity lost the lottery when it comes to mentality, but to put this into practice on a general level and exhibit scorn to people "just because" they're Russian is wrong. It is unfair to anyone affected by a general opinion that they're treated based on association if they go against the grain, and being a good person just stops being incentivized. It's the mindset that gives us Hatfields and McCoys, or, in Russia's case, chronic crime families because Russia itself often punishes whole families for the crimes of a few family members, which I'm sure has no bearing on the sudden power of the Russian mafia, wink wink. Nations, spiritual groups, genetic groups, fandoms, you name it, people always think it's good to generalize them and it helps nobody. It's simply a form of assumption.