By the early 1970s, however, Albanian disagreements with certain aspects of Chinese policy deepened as the visit of Nixon to China along with the Chinese announcement of the “Three Worlds Theory” produced strong apprehension in Albania’s leadership under Enver Hoxha. Hoxha saw in these events an emerging Chinese alliance with American imperialism and abandonment of proletarian internationalism.
The might have been the reasons, or some of the significant reasons, for the protest but I don’t think Mao would have tolerated them more than did Deng.