Hate is hate. Morality is absolute, not relative.
Calls for violence and hate are different things. I don't hate Russians, but I support violence against their soldiers invading Ukraine. Hating someone also doesn't mean they are worth the jail time from a violent act.
There are already multiple car accidents caused by Ukrainian refuges in Romania because they're too distraught due to what they've suffered so far. And you want them to not hate Russians? You can't be rational when you see your battered 5 year old in the morgue.