Conscription

Selective Services is an evil act which is a violation of human rights. It is similar to slavery, in that you are forced to work when you don't want to.

Liberals and Conservatives agree that the draft is unconstitutional, as well as not effective. It is much harder to train people to work for you if they don't want to than if

Furthermore selective service is extremely sexist, since only boys and men are required to sign it in the US. However, if women were required, it would still be sexist since women are banned from joining many combat positions (like in Israel)