The political issue that the supporter of the labor day parade most likely support is: laissez-faire capitalism
In laissez-faire capitalism, the government shall not intervene with the transactions between private business with its consumers in any circumstances. This lead to many of the labors were treated unfairly with small amount of wages and long working hours. This lead to the increase of demand to regulate private companies.
Imperialism is a system where a strong country takes wealth and raw materials from another country. •A “strong” country was supposed to have many colonies to increase its wealth and importance around the world.