Italy deployed 500 additional soldiers to Milan on Saturday as authorities tightened security ahead of fresh protests, a week after looting and clashes with police.

The deployment will reinforce hundreds of troops already stationed in the city and support around 5,000 police and other security personnel. Luxury stores, including Gucci, Tiffany and Omega, boarded up their windows amid fears of renewed violence.

Police said last weekend’s unrest involved around 2,000 young protesters, with 45 people arrested, including 34 minors. Defence Minister Guido Crosetto said soldiers lacked some equipment needed for public-order operations.

Protests also took place in Rome, while demonstrations spread across Europe over issues including education, corruption, pensions, housing costs and opposition to war.

In Albania’s capital Tirana, riot police used water cannons against protesters demanding lower tuition fees and action against corruption. Some demonstrators also called for the resignation of Prime Minister Edi Rama.

In Madrid, thousands marched to demand protection for public pensions ahead of next month’s snap election. Housing affordability remains another major concern in Spain, where rising rents and home prices have triggered widespread protests.

In Lisbon, protesters prepared to march for affordable housing, opposing government measures to ease rent-increase restrictions and facilitate the eviction of tenants who fail to pay.