From the You Tube description:
The Trump Family sings "We're not going to take it anymore" with Dee Snider of Twisted Sister on stage during the Eric Trump Foundation's charity event benefiting St. Jude's Children's Hospital. $50,000 was donated for this amazing performance. Nothing like it! Cheers to the Trumps, Dee Snider, St. Jude's and all of the charitable guests.
It looks like another case of Donald Trump and his family being celebrated for taking credit for donating other people's money.