Keira Knightley Gets Beat Up ... So You Won't

4/2/2009 10:10 AM PDT
Keira Knightley filmed an incredibly graphic and hard-hitting anti-domestic violence commercial -- and, WARNING, it's really hard to watch.

The UK spot for Women's Aid charity is shocking, violent and, for some people, all too real -- with Knightley repeatedly getting kicked in the gut after her jealous "boyfriend" accuses her of cheating.

Hopefully, the performance will move the right people.