It certainly could be argued that by having to pay tax to fund the monarchy, there is a fundamental degree of slavery in our working lives, albeit minor, however:
Ernie has a point, when it comes to oppression, there are plenty of places in the world where people suffer far more than we do.
Being as Palestine was a British Mandate, under whose authority was Israel formed again?
And who rules over the British forces that continue drone strikes after invading resource rich countries under false pretenses?
Back to domestic oppression, who presides over the murky dealings of GCHQ?