Question: When is a person (or group) justified in taking up arms against the government? In other words, how despotic must a government be for violent revolution to be morally justified? Before that point, is a person just engaged in "terrorism"?

Question: Should JK Rowling repay the British government for welfare payments made to her? She famously wrote the first Harry Potter novel while "on the dole." She has been fabulously successful since then, but she likely could not have written that first book without state support. Should she now pay back all the government welfare paid to her during that period?