No, the real difference is the Internet. Finally an anonymous vehicle in which to undermine resistance; and our enemies use it to perfection.
Where was the internet in the 1960s, that hotbed of perfidious treason? Oh, there wasn’t one.
If the president can’t be bothered to ask Congress for a declaration of war, instead advising the day after 9/11 that we could best help by going to the mall, it’s unlikely a sense of common cause will last long.