10 Worst Decisions Harry Potter Ever Made
8. Not Trusting Snape
Professor Snape has always been a controversial character throughout the movies who has never hidden his disdain for Harry. However, he was ultimately revealed to be a double agent who always protected Harry when he could.
In the Half-Blood Prince, Snape murdered Dumbledore, which cemented Harry's hate for him. However, before this in the previous film, Snape was a member of the Order of Phoenix, which Harry was fully aware of. When Dumbledore's Army stormed off to save Sirius Black, Harry did not go to Snape for help.
Harry only thought of Snape as a strict professor but his blind dislike for his potions teacher meant that he did not seek advice from him. He would have been able to contact the Order himself and ensure Sirius' safety but because Harry didn't like his teacher, it resulted in Sirius' death.