Obscure
verb
verb: obscure; 3rd person present: obscures; past tense: obscured; past participle: obscured; gerund or present participle: obscuring
- keep from being seen; conceal.
"gray clouds obscure the sun"
synonyms: hide, conceal, cover, veil, shroud, screen, mask, cloak, cast a shadow over, shadow, block (out), obliterate, eclipse, darken; More
antonyms: reveal
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- make unclear and difficult to understand.
"the debate has become obscured by conflicting ideological perspectives"
synonyms: confuse, complicate, obfuscate, cloud, blur, muddy; More
antonyms: illuminate, clarify
overshadow.
"none of this should obscure the skill, experience, and perseverance of the workers"
You're using the adjective definition, Riot is using the verb.