Bruges, 1302.

The townes people haveth started a rebellion due to the swine King Philip IV of France! He hath decided to make take Brudge under French control! Doth thou and all other noble Flemish wish to taketh our pants down and accept French enterage? Nay! There is pride amoungste our people, indeed many scholars in centuries hence will proclaime that Bruges is the economic equivelant of Florence north of the alps. It is an epicenter of trade, with exclusive textile partnerships with England and Portugal with Hansiatic ships coming in day in, day out. We art powerful, and will strike back at the greedy French for their folly.
  Though the French are jementous, they do not all deserve to die. Though this is what happened, in the massacre of an entire French garrison. We tested their flemishness by seeing if they could say "schild en vriend" (shield and friend), and if they couldnt, we gutted them. King Philip returned with 12000 troops, including many cavalry. Against our 9000 militiamen with no horses, things looked grim. To our advantage, we built and covered trenches for flanking cavalry. We fought hard, we fought ferociously, and we won. We picked up and kept the golden spurs coining the battle name.

It would become historically remembered as one of three major battles in medieval Europe which was incited by the lowerclass to have defeated their masters/owners.