Final answer:
The sentence warns against Congressional action that might lead to class distinctions, reflecting a belief in social equality and the dangers of institutionalized inequality.
Step-by-step explanation:
In the sixth paragraph, the sentence "He said he would regard it as an evil day when Congress would create a class distinction" likely serves as a cautionary remark against legislative action that might institutionalize or reinforce social inequalities.
This statement reflects a concern about the potential consequences of laws that create or perpetuate a hierarchy among citizens, which is a theme in discussions about social justice and democracy. The speaker is voicing a principle that seeks to prevent Congress from enacting legislation that would officially recognize or establish class differences, which would be against the ideals of egalitarianism and equal rights.