“All of us have a constitutional right to call the cops”
This is a radical misreading of the Constitution. What happens when there are no cops, as there haven’t been for vast swaths of the country for the majority of its existence?
When they were getting ready to bury William the Conqueror the man who owned the land approached the officials in charge and said "I must be paid first" ~ so, supposedly, they paid him since, after all, he had a right to approach the government agents and demand his privilege (payment).
There's always been someone in authority somewhere. In general government recognizes the right of citizens, subjects, even prisoners to approach its officers in some manner and ask for assistance.
In true tyrannies that's not the case.