Marches commemorating Protestant victories often go through neighborhoods that are largely Catholic.
Orange songs', a body of fine traditional music ignored by left-wing folklorists, usually celebrate Protestant victories of the seventeenth century.
The parades, celebrating a Protestant victory over Catholic forces in 1690, have led to clashes with the police and costly vandalism.
Strategically and tactically speaking, the Battle of Lützen was a Protestant victory.
It was nevertheless an important Protestant victory: the Leaguers lost 900 to 1200 men (killed, wounded and prisoners) and 18 flags of the 22 they had.
The Protestant victory and subsequent capture of the city sparked the Bohemian Revolt.
Northern Ireland is two weeks into its annual marching season, a ritual of confrontation commemorating 17th-century Protestant military victories over Catholic forces.
A year later they met again in another Protestant victory, this time accompanied by the death of Tilly.
This year's marchers, who commemorate Protestant victories long ago, are fewer in number and less violent than in the past.
Hundreds of years later, they still march to the drums in Northern Ireland to celebrate the Protestant victory.