Son of an elite Jewish Brooklyn family, Aaron Mostofsky, was one of the early protesters, who invaded the halls of Congress.
See Aaron Mostofsky (in fur on the right) inside the Capitol.
Aaron's father is Brooklyn Supreme Court Judge and former president of the National Council of Young Israel, Shlomo Mostofsky.
Aaron's brother, Nachman, , vice president of the South Brooklyn Conservative Club, claims to have connections with high-ranking members of the Trump administration. Nachman was also present at the rally on Thursday, but left before the group entered the capitol.
Nachman Mostofsky claimed that his brother was "pushed inside" and "
My brother did nothing illegal. He definitely was not part of the riot":
https://gothamist.com/news/trump-fur-ever-costumed-capitol-rioter-son-brooklyn-supreme-court-judge