On June 2, 1919, an anarchist's bomb exploded in front of the house of Attorney General A. Mitchell Palmer. Other bombs had been set that day against different government officials. Palmer and the Department of Justice responded in January of 1920 with raids that arrested thousands of people who were suspected anarchists. It was soon questioned whether these "Palmer Raids" were constitutional, however, as a lack of communications and planning resulted in many innocent people being taken from their homes. In which way were the Palmer Raids possibly unconstitutional?