Every public figure keeps personal secrets from the public. So, Martin Luther King, Jr., did, too. For he was a public figure. In fact, I think you'll keep secrets when you become a public figure. Since you've kept secrets all of your life.
What type of argument is this extended argument's second sub-argument?
Consider the following extended argument:
Hypothetical Syllogism
Categorical Syllogism
Argument by Elimination
Argument Based on Mathematics
Inductive Generalization
Predictive Argument
Causal Argument
Argument by Analogy