So what you say the main thing is, when I declare you a tyrant you are a tyrant.
And because they suppressed (non voting, poor) people in the UK didn't declare their king a tyrant it wasn't one for them.
And because they suppressed (non voting, poor) people in the UK didn't declare their king a tyrant it wasn't one for them.
I don't know the exact reasons people put up with tyranny. I suspect every situation is somewhat unique. However, answering that question would allow many future harms to be prevented.
The American revolutionaries declared King George III a tyrant, but that couldn't be the end; open rebellion would mean certain harm or death. So, they acted. They made a case for taking up arms against the crown. They then resolved to become independent (found in the Lee Resolution/"Resolution of Independence"). Two days later, they declared independence. And they fought. Note, though, that the Revolution required the recognition of tyranny.