At least 16 arrested; police deploy stun grenades, horses, and water cannons against protestersHighway 1 was blocked off with chains and barbed wire, as the protesters made good on their promise to escalate their methods and "move on to direct action. " Police said they were "preparing for spontaneous road-blocking. At least 16 arrested; police deploy stun grenades, horses, and water cannons against protestersHighway 1 was blocked off with chains and barbed wire, as the protesters made good on their promise to escalate their methods and "move on to direct action