>>90800044This week's Wanda Thread appears to be Slash Edition, but time for some history.
Wanda and Pietro suddenly learned they were half-Jewish and half-Gypsy in the early 1980s, when they found out Magneto was their father. Until then, they were at first portrayed as generic White Europeans from a fictional nation, then for a time as the children of American WWII superheroes, who had been adopted and raised by Gypsies.
The news that they were half-Jewish was overshadowed by learning that their father was the most infamous mutant terrorist in the world, who once forced them to fight in his private army, so it was never really explored.
Neither of them were ever depicted as practising the religion, although Tumblr desperately wants MCU Wanda to be Jewish. They either didn't notice the crucifix in her room, or are ignoring it.
Since the revelation that Magneto isn't their father, we have had two sets of "real parents". Currently, their mother is a Gypsy, Natalya Maximoff, the previous Scarlet Witch, because Wanda is a Legacy Heroine now. We don't know who the father is yet. I doubt there's any plan in place, so Marvel may well hold off on revealing this until they are allowed to make it Magneto again.
As for the communist allegation, while discussion of the merits of any political ideology in a Wanda Thread is a terrible idea and we should not do it, it is canon that Wanda may wear red, but is not now, nor has she ever been, a member of the communist party. Magneto once tried socialism in Genosha, and her reaction did not look like she thought that was a good idea.