Why my political question (in Vietnamese) was deleted?

In order to be allowed to operate in countries like Vietnam and China, Yahoo (and other likes) must obey local (communist) laws, which oppress free speech and require providing info to the communist authority on any one there (not here of course) determined as "counter-revolutionary", "reactionary". The lure of profit has blinded the capitalist operators. Karl Marx said "Someday the communist will hang the capitalist with the rope financed by the capitalist".