PARIS/TOURS, Feb 11 (Reuters) - Hundreds of thousands of people demonstrated across France on Saturday seeking to keep up pressure on the government over its pension reform plans, including a move to raise the retirement age to 64 from 62. "If they're not able to listen to what's happening on the streets, and are not able to realise what is happening with the people, well they shouldn't be surprised that it blows up at some point," Delphine Maisonneuve, a 43-year-old nurse told Reuters as a protest in Paris kicked off. Unions say there are other ways to do this, such as taxing the super rich or asking employers or well-off pensioners to contribute more