Strikes are shaking up cities across France, and Canadians planning to visit the European nation should stay on high alert. A government travel advisory warns that ongoing protests over pension reform in the country could disrupt tourist services and that even peaceful demonstrations can turn violent. Popular destinations in Paris like the Eiffel Tower and Louvre were forced to close this week by striking workers, while the renowned wine city of Bordeaux saw its city hall set aflame by angry residents. Here's what you should know about the current situation in France and how it could thwart an upcoming trip.