Why does kagan think americans should be patriotic?

Kagan think Americans should be patriotic to be able to sustain America through worst times. Patriotism would also ensure that America has selfless individuals who will heed the need of others and work toward the common good, and defend America when defense is needed.

the american colonists were happy with their vicorty, but the french were mad and the french and indians were not alies, and neither were the french and colonist. i think,

political parties are protected under 6th amendment.