Tariffs are generally imposed for one of four reasons: To protect newly established domestic industries from foreign competition. To protect aging and inefficient domestic industries from foreign competition. To protect domestic producers from "dumping" by foreign companies or governments.
An example of symbolic speech heads back in time to the Tinker v. Des Moines case when a principal suspended two students for fear of disruption whenever they wore a black arm band to school.
Answer:
Because they wanted free rights