Sometimes someone doesn’t use common sense and it ruins things for everyone. And sometimes a lot of people don’t use common sense and it just starts to spread like, well, a virus. That kind of outbreak could be happening around a Pittsburgh park. It started with the city’s shutdown of a city skate park in Polish Hill. Now let’s be clear — this may have been the catalyst, but it was by no means a targeted assault. Playgrounds, picnic areas and other gathering places in public and state parks all over the state have been shuttered under Gov. Tom Wolf’s...