(Laurie Skrivan | St. Louis Post-Dispatch via AP) In this June 28 photo, armed homeowners Mark and Patricia McCloskey, standing in front their house along Portland Place confront protesters marching to St. Louis Mayor Lyda Krewson's house in the Central West End of St. Louis. An affidavit in a court case shows that the white St. Louis couple who stood outside their mansion with guns during a protest have pulled a gun before. Mark McCloskey says in the affidavit that they pointed a gun at a neighbor once as a warning to stay off their property. They claim they own a small piece of land, while trustees of their private street say they own it.