The Indigo Girls will soon be making the rounds with a string of high-profile politically active shows beginning this week when they share the bill with Shawn Colvin.

The Indigos will team up with Colvin to play a Voters For Choice concert in Dallas on Thursday to mark the 25 year anniversary of Roe V. Wade, the Supreme Court ruling that gave women the right to choose to have abortions.

Then, next Monday the Indigos will play the Slam 2 show in New York City, protesting Philip Morris Tobacco's Woman Thing record label. They'll join folksinger Leslie Nuchow, who organized last year's original "Virginia Slams" concert.

Finally on May 8, the Indigos and Shawn Colvin will be in Austin, Texas to play a benefit for Mexico's Zapatista rebels, who are also a favorite cause of Rage Against The Machine.