A catapult was constructed to send flaming projectiles at police lines.
Men in dark hoodies, holding red flags, hurled projectiles at the police.
But a video report showed the police firing projectiles at people who were not traveling in large crowds.
Windows facing the palace must also be sealed to prevent any imperial ill-wishers from hurling projectiles at the emperor.
Some Twins fans at the Metrodome demonstrated their displeasure toward the Yankee Chuck Knoblauch by hurling projectiles at him.
One officer wrote that enraged protesters threw projectiles at police officers and beat them with wooden poles.
Clashes reportedly broke out, seeing migrants throw rocks and projectiles at riot police, including one that injured a lorry driver.
Hundreds of protesters set fire to garbage trucks and threw projectiles at the police on Thursday as a garbage crisis flared up near Naples.
More Indian troops are moving in, setting up large artillery pieces in camouflaged positions in river gorges, from which they boom their projectiles at Pakistani positions.
"We maintained our cool until the fires started and the vandalism started and people threw projectiles at police and others in the crowd," she said.
At Brighton-Le-Sands, south of the airport, up to 200 brawling youths threw projectiles at police and burned the Australian flag.
