LOL...re "residual effects"!
It was JFK who ruined the men's hat business; though the disgusting dregs of the earth, the Hippies, didn't help that industry any either, since they never dressed properly and subsequent generations more or less stopped doing so as well.
Interesting! I always wondered why the Indiana Jones fedora went away. Those stinking hippies!? Now the hippies run the country (except for Trump and the good conservatives)