their short film
... that PragerU's hashtag #DETRANS, originally meant to promote their short film, was hijacked by Twitter users?
... that <a href="./PragerU" id="mwfA" rel="mw:WikiLink" title="PragerU">PragerU</a>'s hashtag #DETRANS, originally meant to promote <b id="mwfQ"><a class="mw-redirect" href="./Detrans_(short_film)" id="mwfg" rel="mw:WikiLink" title="Detrans (short film)">their short film</a></b>, was hijacked by <a href="./Twitter" id="mwfw" rel="mw:WikiLink" title="Twitter">Twitter</a> users?