The NCP leader, along with some party workers, went to the official residences of ministers and hung black-coloured lanterns to their name plates.
In a statement later, Wagh said the BJP-led government has "failed" to solve the problems of people.
"Several decisions of the Maharashtra government have forced the people of this state to have a black Diwali instead of a colourful Diwali.
"It stopped sugar supply through ration system and subjected people to load-shedding. Farmers are not getting proper benefits of the loan waiver scheme and many other misdeeds of this government have agitated us.
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