Like it or not lfc doesn't have a big rep of being a team that harrangs officials the way the united and chelsea do* and if it is the difference between getting nailed on penos and goals correctly being given then go ahead- as long as it doesn't permanently tarnish the club- like a certain madrid manager.
though everyone can find odd examples
Here's one - probably one of the most infamous incidents involving referees of recent times
Here's one - probably one of the most infamous incidents involving referees of recent times