Get out of my show!

Yes we like Rock N' Roll and many people like the band Foo Fighters.
The Rock shows are awesome (at least the shows of good bands) and who goes wants to enjoy that, but there's no space to those who wants to stay... let's say... fighting.
In a Foo Fighters show in London, Dave Grohl says to a guy... well you'll see:

And he has all my support!