It's not purely a compassion thing by any means, don't get me wrong, Eastern European countries by large are racist, but they're also still dealing with the aftermath of previous (forced) migration during the Soviet times.

Families still remember their property being taken away and re-purposed, the (huge, up to one third of population) Russian minorities in the Baltic States by large have not integrated well over many generations now.

Fresh memories of the past and issues still present (understandably) spawn distrust and xenophobia among the locals.

https://en.wikipedia.org/wiki/Russians_in_the_Baltic_states