Say you're a new mayor and you want to make a splash. Say your city is known for malfeasance. And say you just whacked the pain-in-the-butt police chief because he wouldn't do your bidding. What do you do? You arrest a bunch of chumps on corruption charges to show the size of your mighty cojones. Problem is, Miami Mayor Tomás Regalado overstretched this past April when he pushed his new top cop, Miguel Exposito, to arrest three cops, one city worker, and four people who work for nonprofits that received taxpayer money. Prosecutors quickly denounced the arrests, which were mostly for penny-ante crimes. Then, a month later, they dropped charges against four of the alleged miscreants. We never thought the day would come when we would miss former Chief John Timoney, but this fiasco convinced us.