There are some earlier threads that discuss the question of whether Roark was a lying fraud who was both a rapist and arsonist. Here is one, but a search brings up more (try rape too).
Update: This thread finally grew quite long. Even so, many arguments for Roark’s actions being moral have not been made in this thread. Anyone curious about the topic should do a search. Check out the thread linked in this post for starters, but do a search to find more.