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.
He was talking about the fact that they burden has to do with the white men being better than the people that were their (native) people he was talking about. He stated they were blessed with being better in every sense and that was hard to deal with at the time! Hope this helps!