I normally don’t pay much attention to the Associated Industries of Massachusetts’s monthly survey of employers. But AIM’s April survey is indeed rather shocking, with local business confidence plunging last month to its lowest level since the onset of the pandemic. The reason: tariffs and federal fiscal policies. The BBJ and Banker & Tradesman have more on the business blues. … Meanwhile, the Globe’s Jon Chesto reports that major local business can’t stop talking and fretting about tariffs. It’s as if they’re still shell-shocked by the events of April 2. …