Florida prosecutors have added an additional charge of aggravated assault with a deadly weapon against Javier Lopez, for siccing two German Shepherds on Christopher Monzon, a Republican canvasser he allegedly assaulted in Hialeah, Fla., last week. The Miami-Dade State Attorney’s office on Monday filed formal charges against Lopez: aggravated battery with great bodily harm and the additional assault with a deadly weapon charge, which stemmed from Lopez and another attacker’s decision to unleash dogs on Monzon for what he says was the crime of trying to drum up support for Republican candidates in their neighborhood. Lopez, 25, pleaded not guilty...