“The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants…The people cannot be all and always well-informed. The part which is wrong will be discontented in proportion to the importance of the facts they misconceive….. Let them take arms.”

Your father sounds like a wise man, as do you. Ignorance leads well-intentioned people to discontent and rebellion. This is exactly what Jefferson was referring to in this oft times out of context quote.