Which example is the best for propaganda?
a. a picture of a leader vacationing at a beach
b. a leader giving a speech at local high school graduation
c. a picture of the president's family
d. a picture of a popular movie star shaking hands with the president

The correct answer is: D. A picture of a popular movie star shaking hands with the president.

Indeed, according to Herbert George Wells, the best propaganda is the one that is invisible, undetectable, which does not look like propaganda at all. A popular movie star is associated with values which public opinion approves of, by having such person shake hands with the president; people associate the president with this popular actor who in their view represents such values. This deprives them of their critical thinking since they have let propaganda activate an emotional response in them. This propaganda is extremely effective since the act of shaking hands is a required social ritual and the event where the two shale hands is framed as an innocent coincidence.

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.  

i guess you are missing the idea that has to be supported, am i right?