ST. LOUIS -- A year ago, after 18-year-old Michael Brown was killed by Ferguson Police Officer Darren Wilson, police responded to even peaceful daytime protests in the St. Louis suburb by deploying attack dogs and tactical vehicles, pointing sniper rifles at peaceful protesters, arresting people for simply standing still on public sidewalks, flooding demonstrators with tear gas -- often without warning -- and shooting them with bean bags, wooden pellets and balls filled with pepper spray. A year later, St.