An undercurrent is a sneaky phenomenon. The surface may appear still, but once you are in the water, the undercurrent will pull you in whatever direction it is flowing.
The same can be said about news, social media, and even good old gossip. They may seem innocuous to begin with, but once you are in the thick of it, the undercurrent of acrimony will carry you where it wants to go.
Of course, social acrimony is only present in our lives because it has been created and sustained by people. Unlike an actual undercurrent—which is ruled by natural laws—the bitterness, spite, rancor, animosity, and hostility that seems to be present just under the surface of too many human relations these days can only subside if enough people decide that it is time to create a new type of undercurrent, one of harmony. *