About 250 people protesting Halliburton's involvement in Iraq marched, danced and screamed today around the downtown hotel where the Houston company's annual meeting was being held. Police said 15 protesters were arrested, including seven who dressed in business attire, snuck into the Four Seasons hotel and chained themselves to each other to block entry to the meeting. Charges against the protesters including evading arrest, trespassing, assaulting officers and injuring a police horse. Houston police said at a news conference this morning that during the demonstration, one officer was punched in the face, another was kicked, and another was kicked, punched and pushed to the ground,...