At times shouting to try to attract Gov. Rick Scott’s attention, a crowd of about 150 rallied Wednesday at the Capitol for slain teenager Trayvon Martin. It was also the 44th anniversary of Martin Luther King’s assassination. Speakers demanded the arrest of George Zimmerman, who shot Martin on Feb. 26 but hasn’t been charged, and an end to the stand-your-ground law under which Zimmerman may defend himself. Rep. Alan Williams, a Tallahassee Democrat, wore a hoodie as he led the crowd the crowd in a chant of “We are Trayvon Martin.” Tallahassee Mayor John Marks spoke of Martin’s parents and said the criminal justice system must do its job. “We’re not here to try anybody in the streets or through the press,” he said. “We just want the justice system to work as it should.” Former state Sen. Al Lawson, who voted for the 2005 stand-your-ground law allowing gun carriers to meet force with force, acknowledged voting for the measure and called it a mistake. “We didn’t really read the bill all the way through, and an interpretation in a certain section of the bill is where the problem is,” he said. “I don’t think it’s just a matter of changing the law. I think we ought to get rid of the bill.” Lawson is running for Congress against U.S. Representative Steve Southerland, a Panama City Republican.