Honestly, that's kind of a shitty thing to do. I would have limited it to flipping him the bird as I walked by. If, even that.
Those kind of people are a complete waste of time. You know that if they got sucked into the biden/harris bullshit in the first place, they don't have a shred of common sense. In that regard, nothing is going to change their mind and they are not worth the bother.