In 1840s Baltimore, these fights were happening on a weekly basis, with damages as high as $130,000 (which is the equivalent of 'all of the money' today). Weapons of choice included pipes, wrenches, and even musical instruments. But hey, at least guns were reserved for occasions that truly merited it, like when they demanded free alcohol and didn't get it.
Fun fact: the "WEEEEOOOO" sound started as just drunken wailing.
Perhaps worse yet, some firemen actually started bonfires to raise false alarms, lure rival groups, and fight them in the ensuing chaos -- bringing new meaning to the term "firefighter." They'd even use the fire engine to get from fight to fight -- or just race each other for shits and giggles, risking their necks and others' in the process. The Missouri Fire Company alone ran over four people in two years, and they're supposed to be the nice ones.