regardless that someone does or doesn`t have a learning ability & to say they do just cause they look like it is mocking them too ..so regardless what the program makers showed or didn`t show .. you are also guilty to a degree of mocking this girl .....but minus that ..people are going to laugh at what they find funny .. and just cause one person doesn`t find the inncident funny doesn`t mean someone else won`t .
as my favourite comedian said .. " there is no such thing as a blue joke or blue matrial ..it`s either funny or it`s not funny " ..
you do get people who will not mock anyone for any reason . but will laugh at anything that tickles their funny bone ..it`s just part of human nature ..