worker works his way through the picket line

I was out with a friend,that I meet on thursdays now and again.We went down
to grassmarket [EDINBURGH].This guy was putting out the fence to turn into a place for drinking.
This used to be a bad place to go when I was young,but thy have cleaned it up alot.
IF anyone was looking back,[tuesday 12th]thy would see I had been north again on my free bus pass.I put it up late at night so no one saw it. thanks.