-si- Surely depends on whether there is a group of actual nutters around though.
Sectarianism doesn’t necessarily result in outright violence. The majority of people, even in Glasgow, are tempered somewhat by the likelihood of arrest and doing time for unprovoked violence, which you get the book thrown at you for. For most people, even hard cunts, there is the calculation of ‘do I potentially do time here just to look like a bit of a psycho?’
We still have orange marches around here (the north west), the only part of England that has them.