SHOULD I stay or should I go?

What should change in the world?
If you become the President of France what will you change?
For example:
Well, we should support the elderly more, we should control the supermarket prices,
we should invest in space research, we should do something more for the environment
We should stop cruelty to animals.

Should there be a debate about French identity?
The Clash: Should I stay of should I go


THE INTERVIEW BBC GRAMMER CHALLENGE

Should is a Modal Verb
You SHOULD do something, it is a good thing to do or the right thing to do. You can use SHOULD to give advice or to give an opinion.

Donald Duck went to Mickey Mouse and said 'There should be world peace ' 'And what's stopping it? ' said Mickey Mouse. 'Well' Donald said "Daisy Duck is always shouting at me and I think we will get divorced."
"First of all" said Mickey, "You should've remembered her birthday' 'Then, you shouldn't sing in the bath when she's asleep." 'Life's hard', said Donald, 'I should have been born a dog"