In May, in Rensselaer, N.Y., and in June, in Bluefield, W.Va., two men, noticing that police were investigating nearby, became alarmed and fled out of fear of being arrested — since both were certain that there were active warrants out on them. Nicholas Volmer, 21, eventually “escaped” into the Hudson River and needed to be rescued, but the police were after someone else, and no warrant was on file against him. Arlis Dempsey Jr., 32, left his three kids on the street in Bluefield to make a run for it before police caught him, but he was not wanted for anything, either.