Rep. Dave Camp (R-Mich.) used today's "Constitution Day" holiday to remember an anti-abortion activist slain in Michigan last Friday.

Camp posted a tweet on Thursday praising the member of James Pouillon, who was shot to death last Friday while protesting outside of a high school.

Camp tweeted Thursday:

It's Constitution Day. I'm thinking of James Pouillon; I knew him 20 yrs. Killed Friday expressing his 1st Amdmnt Rts defending the unborn.

Pouillon had been a controversial pro-life activist within Camp's home district, having been allegedly killed by Harlan Drake over concerns about Pouillon's often use of graphic abortion images in protests.

Constitution Day, celebrated each September 17th, is meant to celebrate the drafting of the Constitution, and the values and rights contained within it.