Two arrows forming a full circle — the universal "repeat/loop" or "retweet-style" symbol, used for playlist repeat, recurring events, or captioning "this keeps happening." On many platforms it visually doubles as a stand-in gesture for "reposting" even outside apps with a dedicated repost button.
Keywords: again, anticlockwise, arrow, arrows, button, counterclockwise, deja, refresh, rewindershins, vu