Youk Scan News Today

I should say. and police are out in full force. police have detained 320 people for questioning before the marches even started. lets go live to paris and melissa bell. tell us the mood there and the concern that we could see more violence. >> reporter: already if you look behind me, you k scan see the evidence of the violence last week. this crowd goes well down the champs-elysees. so many of the yellow vests have turned up to protect already, of course 320 people already taken in for questioni...