Every sentence is written or spoken in what is called a voice.
Voice refers to the verb placement in a sentence; whether the action will be placed first and the subject second or vice versa.
There are two types of voices than can be used in a sentence; the active voice and the passive voice.
In a passive sentence, if we want to mention what caused or who did the action, we use the agent “by”
The hash tag #DumsorMustStop was started BY Yvonne.
Using the same sentence in an active voice should be: Yvonne Nelson started the harsh tag #DumsorMustStop.
Remember, in most cases it is better to use active-voice sentences both in speech and in writing because the active voice is clearer and often more concise than passive-voice sentences.