Mercy Killers
IRT Theatre, terraNOVA Collective's soloNOVA Arts Festival, Off Off Broadway By Adrienne Urbanski BOTTOM LINE: Through this show Milligan sends a powerful message about the state of the health care system in America. The political agenda running beneath the Mercy Killers is an obvious one, but it's also an important and relevant one. Writer and performer Michael Milligan plays Joe, a simple conservative man…