The Victorian government has condemned an attack on a First Nations protest camp in Melbourne by far-right demonstrators following an anti-immigration rally. Video shared with the ABC shows a group of men wearing black clashing with people at Camp Sovereignty, at King's Domain on Sunday. The men also verbally abused members of the group occupying Camp Sovereignty and could be seen stomping on an Aboriginal flag. Neo-Nazi figure Thomas Sewell was among the group of men clashing with Camp Sovereignty supporters. Camp Sovereignty organisers say a group of far-right demonstrators attacked the camp on Sunday afternoon. (Supplied) Camp Sovereignty organisers...