I very rarely have any control over things outside of my personal life. But I can have and express an opinion. That's how I can (or cannot) influence things a bit.

I accept the practical difficulties of where this play was staged, but in cases like this - but you can do more than simply allow others to decide your principles for you.

You can support the play - by paying to go to see it. Then even if you find that you do not agree with its view (the only way the find out for sure) - you would have at least supported the right of the playwright to express that view.

You can't do this if you allow the play to be prevented by mob rule and allow the principle to be trampled (by later expressing a view that there are occasions when it can be trampled). You are passing the whole thing for someone else to decide for you. Probably THE most foolish thing that history tells us that anyone can ever do.

I just try to show Shambles how silly his all or none thinking can be in the exteme case. People like him make me afraid. In the extreme case, they even would sacrifice humans for the sake of their principles.

This and the 'fire' argument are far more silly and worry me just as much. The whole point of upholding this (or any) principle and certainly of not allowing others to decide it for you - is to try and avoid these extreme cases and save humans and the world from foolishness such as yours - and not to sacrifice anything (including important principles).

Sadly issues do not come neatly signposted, as ones you can let by and ones you can't. There may be a time when you can address them before they become too big for you to ever address and when no one is going to ask you. That, I would suggest is the best time for you to address them and that there never is a time to allow anyone else to decide for you.