Thomas Jefferson, having been a big fan of the Enlightenment philosopher John Locke, talks specifically about how when a government becomes tyrannical, it is within the rights of the people to replace that government.
D Begin spending money again
Answer: I would advise Augustus to not reduce the program.
Explanation: This would cause and uprising within his city and also compromise his trading with Eqypt and Spain. There could be a compromise whereby the grain could be less reduced, however, to shut it down would be a massive uprising.