Final answer:
Taney fails to provide evidence for his assertions about Black people being universally considered inferior.
Step-by-step explanation:
In the passage from the opinion of the court in Dred Scott v. Sandford, Justice Taney argues that the class of persons described in the plea in abatement, referring to Black people, were not considered citizens and did not have any rights or privileges under the Constitution. A counterclaim to this claim could be that Taney fails to provide any actual evidence for his statements that Black people were universally considered inferior. Without concrete evidence, his assertion is speculative and lacks credibility.
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