Hi, I have a friend that has got scammed yesterday.
He was searching on youtube about Bitcoins and he found a video about a Bitcoin Generator. He trusted it (He is noob at pc and money so he didn't know about scams).
He downloaded the program, he launched it and there was "You have to deposite 0.01 btc to [wallet address] to activate the generator". He deposited it

He restarted the program and nothing happened... he lost the money.
He want to report this to the police... can he do that? Will the police do anything? Will my friend get back his bitcoins?
Depends on the country, you can always report theft of 50$ at the police, but, it is HIGHLY unlikely they will even look at your file. It is a complete waste of time for them.
Chances that that scammer lives in the same country as you, is, pretty small, and even if the police catches him, your friend will probably not see his bitcoins back. they're long gone.