I wish they could educate, and convince, more of their Jewish friends.
As a Jewish conservative descended from earlier immigrants, I echo your thoughts. I had known about Soviet repression of their Jewish population in particular since the 1960s, and have met a few of the recent Soviet Jewish immigrants to the US.
In general, though, there is limited social interaction between the recently arrived Soviet Jews and their descendants and the more assimilated and established Jews descended from earlier generations of immigrants. It's just that the newer Soviet immigrants still maintain their different cultural ways, so opportunities for the more established left-leaning Jews to learn from them are limited.
“..In general, though, there is limited social interaction between the recently arrived Soviet Jews and their descendants and the more assimilated and established Jews descended from earlier generations of immigrants.”
That’s too bad.
But maybe you could reach some of them a bit by writing a letter to the editor to secular or Jewish newspapers?