Around one hundred anti-immigration protesters gathered in Sweden's capital Stockholm on Saturday amid tight security a day after a masked mob threatening migrants went on the rampage. Protesters holding placards demanding Swedish Prime Minister Stefan Lofven resign waved Swedish flags as police officers stood on guard."This is a demonstration that attracts groups and individuals who sympathize with or are active in this, what should I say, radical nationalistic landscape. The Sweden Democrats are here but there are also many people from different parts of this new power group, as it is often called, the new group of race ideologists," Jonathan Leman, a researcher who was observing the protest from afar said.A counter demonstration took place nearby on Saturday, which police said attracted around two hundred people, leading to clashes between the two groups. "There were some clashes between a few individuals. We think they were linked to the demonstrations taking place earlier," said Goran Bylund, a police officer at the scene.