"I've got friends in FL who heard the sonic boom of the first stage reentering."
I watched some Periscope recordings from people watching the landing, and they all seemed to be shocked by the loudness of the sonic boom. Some thought the 1st stage booster exploded after landing (because it takes a while for the sound to reach them).
SpaceX claims "this is no worse than the sonic boom from the shuttle landing", but I don't know, I've heard the sonic boom from the shuttle landing at Edwards and it was like someone hitting a drum, not like an explosion.
NASA was lucky to land one shuttle per month, whereas SpaceX has dreams of launching/landing once per week.
Also the people near the Space Coast or Vandenberg might be able to deal with the sonic booms (as space is pretty much their whole industry), but if SpaceX moves launches/landings to Brownsville, Texas, I can imagine they will upset a lot of people in Harlingen, McAllen, and Corpus Christi not used to rocket launches or supersonic aircraft (not to mention our friends across the border in Reynosa).