"Liar" is a very strong accusation. It is arguably the foulest non violent behaviour.
You may not like the term.... you may even find it disgusting....
But like it or not, politicians lie to us all the time.
Every manifesto pledge that is not fulfilled is a lie.
The smoking ban that was not going to happen - a lie.
When they started that web site to ask what laws the people wanted repealed... a lie.
Global warming - a lie.
Second hand smoke - a lie.
When they blame rising energy costs on increasing fuel prices - a lie.
In fact, politics would be in a much better state if more lies were picked up on instead of glossed over...
Quite frankly, we've reached the stage now where politicians lie so much we don't even expect them to tell the truth any more... so they don't bother.