A commenter at ryanavent.com says:

Libertarianism has much to offer our political discourse, but every belief system has its dogma, its blind spots. Libertarianism classically has two:

1. Government is the only agent of oppression.
2. Government can do nothing right.

Hmmmm....well this libertarian believes the following:

1. Only people can be agents of oppression. All people in government are agents of oppression; people engaged in market exchanges are never agents of oppression; people not in government or in markets are sometimes agents of oppression (theives) and sometimes not (friends).

2. People in government can do the right thing or the wrong thing, but either way, only by violating my freedom.