beaten on

Verb

beat on (third-person singular simple present beats on, present participle beating on, simple past beat on, past participle beaten on or (US colloquial) beat on)

1. (figuratively, intransitive) To talk at length; to go on and on; to rant or expound.
   • She's beating on about poor service.
2. (figuratively, transitive) To criticize, impugn or shed a bad light on (a group or topic) for political gain.
   • She's unpopular enough that photos of her are used in elections to beat on liberal candidates.