The "facts" on this issue are subject to interpretation. Gun violence is cited by the Center of Disease Control as one of the leading "diseases".

My complaint is that carrying guns to a political rally is bullying. It attempts to force
ideas down someone's throat. If not, then why carry?

The people that feel the need to carry suffer from paranoia. If they got into a gun battle with a professional criminal they would lose.

It doesn't deter professional criminals. That is just an opinion, not a fact.