Final answer:
Protesters wearing their "Sunday best" aim to present themselves with dignity and command respect, to counter stereotypes, and to emphasize the seriousness of their cause, such as the protest against sweatshop labor.
Step-by-step explanation:
When protesters wear their "Sunday best" during demonstrations, they are often attempting to convey a message of dignity, respectability, and seriousness regarding their cause. This sartorial choice aims to challenge stereotypes and influence public perception positively. In the historical context, similar to when African American civil rights activists wore formal attire to protests, dressing in this manner can be a strategic move to garner wider community support and to present the protest as peaceful and legitimate. For example, in the protest against sweatshop labor, presenting themselves in polished, formal wear may highlight the juxtaposition against the exploitative conditions and poor treatment faced by the workers who create such clothes. It underscores the demand for humane working conditions and fair compensation. This strategy can also serve to counteract any negative media depictions or cultural biases that might dismiss the protesters as unruly or trivial.