@ravelin …(that is, "motivated to influence people"), disinformation is intentional, but what differentiates them from propaganda is the broader aim and who deploys them.
An urban legend might be misinformation, but is not propaganda.
A dumb disinformation prank from 4chan, even if it becomes somewhat noticeable in the mainstream, is not propaganda.
Calling them "propaganda" waters down that term.
I stand by what I said: it is important to be able to differentiate between these three things.