Draw on the walls! Dance on the train!

A simple thought that it'd be lovely to be freer in public...

So shops would have shutters that people could paint on...
...you could doodle in chalk on the pavement...
...there'd be a space at the end of the station platform for those who wanted to let off some steam and dance along to their iPods...
...or you could do your situps at the bus stop, completely shamelessly...
...and it'd be fine to laugh to yourself...