I can't imagine what's going through his foster parents' minds right now.

"Oh dear, what did we go wrong in raising him to be like this...?"

Seriously... He have zero idea how this is impacting his family. I'd be shocked if his foster family is supportive of his "activism" but I highly doubt they would be. I think they are not on speaking terms with Colin, just like Aaron Rodgers' family is not on speaking terms with Rodgers.