USA (Reuters) - From San Francisco to Atlanta, the US began celebrating St Patrick's Day this weekend. The holiday celebrates the patron saint of Ireland, who brought the Christian religion to the country.

Irish immigrants brought the holiday to the US, but now people of all backgrounds join in.

While the holiday falls on March 17th, many cities began celebrating early.

In the Windy City, the Chicago river ran green, while the Budweiser Clydesdales marched through Atlanta.

In St Louis, there were lawn mowers, tractors, and even a group protesting the decision by owner Stan Kroenke to move the St Louis
Rams football team to Los Angeles.

There were balloons and floats, and of course, lots of music.

For one day at least, everyone is Irish, even the potatoes.