DUBAI (Reuters) – Video clips showing a fire at the ancestral home in Iran of the Islamic Republic’s late founder, Ayatollah Ruhollah Khomeini, have appeared on social media, with activists saying it was torched by protesters. Reuters verified the location of two video clips using the distinctive arches and buildings that match file images. However, the semi-official Tasnim news agency denied Khomeini’s house was set on fire, saying a small number of people had gathered outside the house. The social media videos show dozens of people cheering as a flash of fire is sparked in a building. Reuter…