Disorderly conduct in your link:
“(2) Incite or provoke violence where there is a likelihood that such violence will ensue; “
This part clearly doesn’t apply to him. He didn’t incite or provoke violence.
Inciting a riot according to your second link:
“(a) A riot in the District of Columbia is a public disturbance involving an assemblage of 5 or more persons which by tumultuous and violent conduct or the threat thereof creates grave danger of damage or injury to property or persons.
(c) Whoever willfully incites or urges other persons to engage in a riot shall be punished by imprisonment for not more than 180 days or a fine of not more than the amount set forth in § 22-3571.01, or both.”
Riot, according to your link, requires
violent conduct. He didn’t incite a riot because he didn’t urge others into violent conduct. He explicitly stated that they need to be
peaceful. It’s right there in your link.