There is whitewashing (like of al-Qaeda money and drug money by HSBC bank).
There is greenwashing (like in the green logo and arts sponsorships of polluting oil firm BP).
Now, in Egypt, there is yellow-washing.
This video is called Egypt: Graffiti as a Revolutionary Art Tool.
Egypt: Graffiti Removed, Another Appears By Morning
19 September 2012
Graffiti in Mohamed Mahmoud Street were removed at a late hour on Tuesday where walls were painted yellow, sparking fury on social media.
It is still unclear who removed the graffiti.
Last November, Mohamed Mahmoud Street, branched from Tahrir Square, witnessed violent confrontations between security forces and protesters resulting in deaths and injuries.
The walls of Mohamed Mahmoud Street were covered with graffiti by activists, following the battle named after the street.
An eyewitness told Aswat Masriya that a few hours after the graffiti was removed, pedestrians were shocked to see new graffiti that translates to “wipe some more, cowardly regime” appear on the wall.
Activists on social media complained that graffiti on Germany’s Berlin Wall remains to this day as it expresses the people’s struggle against the tyranny and injustice of a corrupt regime.
In a similar attempt, state workers cleaned the walls in May, only to have new ones emerge hours later.
Egypt: Police Says Not Responsible for Removal of Mohamed Mahmoud Graffiti: here.
Egypt: ANHRI Condemns the Disperse of the Nile University Students Sit-in Using Force: here.