Complex sentence: He has dabbled from time to time in human rights and labor issues, having helped form the Screen Extras Union of India, and also having campaigned for the creation of Uttarakhand and for the rights of Garhwali farmers.
Split into simpler sentences: He has dabbled from time to time in human rights and labor issues. He helped form the Screen Extras Union of India and campaigned for the rights of Garhwali farmers.