Residents in Barcelona, Spain, and several other popular European destinations say tourism in their cities is driving up housing costs for locals.

The U.S. State Department is warning travelers to exercise more caution when traveling to Europe amid a renewed wave of anti-tourism protests.

The protest in Barcelona culminated in chants of "You're all guiris!" – local slang for foreigners – and a burst of firecrackers. Red smoke billowed up in front of rows of police officers blocking all routes to the Sagrada Familia.

In Italy, Portugal and Spain, activists used water pistols and a “noisy stroll” of suitcases to draw attention to rising housing costs and the environmental toll of tourism.

The humble water gun — the cheap, squirt-squirt variety — has become the weapon of choice and symbol of Spain's anti-tourism protests.

Airbnb has responded after thousands of angry Majorcans marched through Palma on Sunday in a noisy protest that told tourists to 'go home'

By Joan Faus and Corina Pons BARCELONA (Reuters) -Activists against overtourism are planning protests across Spain, Portugal and Italy on Sunday, with one group urging people to bring water pistols to the demonstration in Barcelona.

On Sunday, activists in Barcelona, Lisbon and other hot spots plan to take to the streets to voice their concerns about “touristification.”

The march began at 6pm in the heart of Palma, with a smaller protest also taking place in Ibiza, with the crowds disrupting many of the islands' visitors' evening meals while the group chanted "tourists go home" and waved placards reading "Majorca is not for sale," and "Your vacations, our anxiety."

FUMING Spanish locals yesterday surrounded a hotel and targeted tourists with water guns as mass protests unfolded across the country. Campaigners were heard yelling out “tourism is