On a visit to Glasgow try and stay in the City Centre and don't explore some of the way out housing schemes, where drugs, and gang warfare, are rife.
There are even some areas where all that matters is whether you are a Catholic, or a Protestant, or Rangers or Celtic. Best to say you are an atheist that confuses the thick bastards most of them can't even spell atheist.
If approached by some Ned (Chav in England) that says " Dinnae mess wi me am jist oot the big hoose", take this as a warning don't get involved. The translation of the ned's statement means Don't mess with him he is just out of prison for GBH.
Glasgow is really quite a nice place but like all major cities, there are Scumbag's you just wished you had a wee red button to exterminate the lot of them.