[Kizzy]

No they shouldn't remove them as a religious observance as such, that said due to the style of prayer maybe it would be to minimise the risk of contamination from outside?
Maybe some dust covers?

You can hear in the vid swearing, that surely is also prohibited in an area so sacrosanct?
It shouldn't prohibit an individual being arrested wherever they happen to be.
That said an individual has the right to ask why they are being arrested and not simply be carted off, that is an infringement of civil liberty.