A new report has found at least 110 African Americans have been killed by police, security guards and self-appointed vigilantes since the start of 2012. The group Malcolm X Grassroots Movement says African Americans were executed in “extrajudicial” killings at a rate of roughly one every 40 hours during the first six months of the year. Nearly half the victims were unarmed, while others were alleged to have “weapons” that included a cane and a toy gun. Racial profiling allegedly played a key role, with nearly 40 percent of police accounts citing “suspicious behavior or appearance” or traffic violations as the reason for attempting to detain the person they killed. New York, Texas and Florida were among the states with the highest number of killings. In Florida, where the unarmed teenager Trayvon Martin was shot to death by self-appointed neighborhood guard George Zimmerman, a dozen African Americans were killed.