Pistols or rifles for vouchers: this is the idea of the city of Houston to reduce the number of weapons in circulation. Hundreds of people are now bringing rifles and other firearms that were gathering dust in their homes to the police. The Democrat city hopes to fight violence in the state, where gun laws are particularly non-restrictive. The program has been an undeniable success, with a total of nearly 800 guns recovered by the authorities. IMAGES AND SOUNDBITES