Are most Gypsies of Italian descent For example US carnival hands?

No. Gypsies, historically known as Romani people, trace their origins to the Indian subcontinent. They have a distinct ethnicity, culture, and language (Romani), and their diaspora can be found across Europe, the Americas, and other regions. In the United States, many carnival workers originate from various backgrounds and ethnicities, but they do not specifically belong to the Romani people or have significant Italian descent.