///Both attackers were shot dead by anti-terror police units as they ran outside the sanctuary shouting "Allahu Akbar!"/// I read that they were charging towards the Armed Police when they were shot, so yes, correct course of action.
The murderers were both young men. They might have served 40 or 50 years in prison if they'd been taken alive. That's a lot of porridge.
But in the circumstances the police needed to demonstrate a robust approach.