How many atrocities have been carried out by liberals?

I often wonder about the "best" way to view the world. Those who read this blog will know that I hold liberal, to the point of anarchic, views but I fret about the consequences if everyone held the same beliefs. Would we decend into chaos, would progress cease to have meaning, would we be more or less happy.

As I write I am watching a programme about David Badiel's personal family history which took him to the site of the Warsaw and included images which never cease to stun me into silence at their awfulness and inhumanity.

I then found myself considering the title of this post which I will state again:

How many atrocities have been carried out by liberals?