I really couldn't give a toss about "fucking the pope" or upto our knees in whoever's blood or indeed 19th Century Terrorist bastards, what on earth has that got to do with Rangers football club and football ? We go to Ibrox to support the team we love, not to get involved in things that bring trouble to our doorstep,cost our club money and see those who don't get involved with the add on's being being tarred the same as those who do sing them.
You want to sing them then hire a hall somewhere with likeminded people and sing to your hearts content instead of damaging the club you're supposed to love, which you have now done and innocent supporters will now suffer and have to give up their seats.
Loving the club is positive, bringing trouble to it is negative and harmful, you don't harm something you love.