At first, every search kept pointing me toward Judge Anthony Chan Kin-keung in Hong Kong, who blocked the protest song “Glory to Hong Kong.” But I realized that didn’t match the challenge. The description clearly mentioned a singer asking for permission to shoot a video, being denied, and then the “other side” stepping in for safety.
Looking deeper, I found Michael Jackson’s 1996 video for They Don’t Care About Us. Officials in Rio tried to stop him from filming in the favelas, and on February 5, 1996, Judge Lucas Felipe da Silva Haddad suspended the shoot. In the end, traffickers in the area protected the crew, perfectly matching the puzzle hint.
That makes the correct flag:
BUPCTF{FirstName_felipe_da_LastName}