The NBA is known for being a league in constant flux. Players are constantly going from one team to another more so than any other sport, as teams are constantly looking for that one player to get them over the top or get them preparing for their future.
However, with that much movement in the league, and with general managers constantly under pressure to put together a winning team lest they be fired, there are constantly bad trades happening.
Each team has that one trade in their history that absolutely kills their fanbase to talk about. Whether they gave up on a player too soon, traded a draft pick in a year that pumped out an amazing draft class or just traded a player that ended up swaying multiple championships, teams have done regrettable things.
As long as there is an NBA, there will be terrible, poorly thought-out trades that affect a team for years to come, and I have picked a trade for each team as their worst of all time.