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A hero is a savior figure, he stands up to injustices of people through acts of bravery and courage. He stands up against all odds for a specific cause. A King merely rules through ascension to the throne. Beowulf not only rids the Danes of Grendel, but also his mother and the dragon.
Discrimination is when you treat someone in a disrespectful manner based on their age, sex, race, etc.
Age discrimination is when you disrespect someone based on their age.
For example, a cashier follows a teenager around the store because they believe they are going to steal something since they're young and naive. Or, not letting an elder in to a club because they're too old to dance.
The citations in the passage above has developed the main idea that the creation of the bicycle has brought a lot of changes, one of it is the new clothing options for competing women. The excerpt is from the story “Wheels of Change: How Women Rode the Bicycle to Freedom’, written by Sue Macy.