This isn't the first time this has happened.  I guess this is why we can't have nice things.  A couple of years ago the city put a brand new playground in at Wade Bowl.  Within a short period of time, vandals have ripped up multiple sections of the special cushioned playground surface. 

Some of the sections have been repaired, but this just keeps happening.  They also had to replace the lettering on the park's sign due to people removing the letters.