A post circulating on social media - 48,000 shares and counting so far - depicts still images of two news reports, one in California in August 2017 and one in Florida in February 2018 after the Parkland school shooting.
The post alleges that both images depict the same man, David Hogg:
The allegation is that he is a "crisis actor", paid to pretend to be a witness/survivor of events that he was not actually present at, or that did not take place at all. I know there were similar allegations about the Sandy Hook shooting a couple of years back.
I don't think we can answer whether he's a crisis actor or not and I don't know what the event he "witnessed" in August 2017 is. Is it the same man in both of these images?