Of course some do cry...
I stopped reading at the end of the first paragraph Oloo's .
Oloo forgets alot of things, or maybe he just tries to ignore them. I might be wrong, but i do not think any African in a slum situation cries, nor will he go to his family and whiningly narate his ordeal if he knocks his toe on a stone. (English uses the word tripping for such.)
Of course some do cry. But they know the reason why. (As selfish as it might be) but if he is a perenial crier everyone will know and it will be upto the particular.
It is time all people who describe complaining people as people who do not know what they are saying put some reasearch to back their theories. If that is the way to go. Let us listen to complaints and use our knowledge or education to provide a respectfull way forward. Please.