Kluwe publicly released a letter on September 7, 2012, via sports website Deadspin he had sent to Maryland state assembly delegate Emmett Burns, defending the opinions of Baltimore Ravens linebacker Brendon Ayanbadejo and condemning Burns on his attempt to stifle Ayanbadejo's free speech. Ayanbadejo has been a vocal supporter of same-sex marriage and Burns had sent a letter requesting that the Ravens ownership "inhibit such expressions" by their employee. On October 1, 2012, Kluwe published a letter to the editor that responded to a video statement released by former Viking Matt Birk in supporting a ban on same-sex marriage. In the letter, Kluwe outlined six primary reasons why he disagreed with Birk's statement. Kluwe was also featured in a documentary called "The Last Barrier" which aired on NBC Bay Area on December 8, 2012. During this interview he spoke about his feelings towards equality.