Six people have been arrested after police clashed with protesters in Milan, one of the hosts of the Winter Olympic Games, during the first day of the competition. Thousands took to the streets of the city in northern Italy on Saturday to protest against the Games and a range of issues including the cost of living. Some released fireworks and threw stones at police, who responded with water cannons. It comes after the government tightened protest laws in the wake of a demonstration last weekend in Turin that left more than 100 officers injured, according to government figures. Meanwhile, officials are investigating suspected sabotage on northern Italy's railway network on Saturday. Prime Minister Giorgia Meloni labeled those protesting against the Olympics as the enemy of Italy, while Deputy Prime Minister Matteo Salvini denounced confrontation with law enforcement. Although many protesters marched peacefully, some raised concerns about the sustainability and costs associated with the Games.