'If we are not heard, (...) I think things could get more extreme', says a protester at the entrance to Rungis wholesale food market, south of Paris, a key food distribution hub for the capital region's 12 million people. Farmers 'are used to difficult situations', he adds, and can 'stand their ground' for the long term if the government fails to address their concerns. IMAGES AND SOUNDBITES (COMPLETES VIDI34H87VF_EN + VIDI34HB29W_EN + VIDI34HB6HH_EN)