PORTLAND, Maine — The executive director of the Christian Civic League of Maine says a conservative lobbying group in Washington, D.C., was targeted by a gunman this week because of its “support of traditional marriage.”

A gunman who authorities say was critical of the Family Research Council’s positions opened fire Wednesday inside the lobby of its Washington headquarters, wounding a guard.

Carroll Conley Jr. from the Christian Civic League says “senseless violence” will likely continue as gay marriage opponents are referred to as “hate groups or bigots.” The league is one of the groups fighting a proposal that would legalize gay marriage in Maine.

Conley said he has visited the Family Research Council’s headquarters several times and knew the security guard who was shot. The guard survived and the gunman was charged.