We've all been there:
Encountering a comment so mindnumbingly stupid, ignorant or indecent, maybe racist/ homophobic/ sexist/ etc that it's an act of superhuman grace to simply remain silent.
But stoic silence in the face of radioactive brain worms eats at your faith in humanity.
Well there is an alternative approach, to reaffirm your humanity:
Gleeful mocking.
The ignorant racism in question:
"wow #africa has wifi????"
And the delightfully sarcastic over-the-top response:
I love it.
however those ignorant idiots will believe it as true.
Can't fix wilfully stupid, I guess.
The people making this video must have had fun.
Don't feel bad, there aer literally US citizens who think Canada is a frozen wasteland (even though we are experiencing up to humidex temps of 106F) and are shocked to discover we have *microwave ovens* and smart TVs, and *gasp* internet/wifi.
@Snowshadow but you still bathe in maple syrup, right? 
@benroyce @Snowshadow No no no it's poutine now. Maple syrup is so old fashioned.