Rant - Angry cops

Today Hubby and I were driving around Seattle. We came to a stop light where workers were working on the road and a worker was holding a SLOW sign and a cop was helping direct traffic. As we approached the sign said STOP which we did. As the worker changed the sign to SLOW we proceeded slowly. Well the cop was waving his arms all in a huff because we weren't moving fast enough. Mind you the sign says SLOW, and we had to move out of our lane into the oncoming lane. As we reached the T intersection the cop said, "do you know what a turn signal is'. No mind you my hubby did turn on his turn signal so maybe our light is not working outside but I couldn't believe he was getting annoyed because we didn't floor it and speed through the intersection. Go figure!