Of Gun-Free Zones and Transgender Bathrooms

I've noticed an odd left wing vs. right wing dichotomy regarding belief in the magical power of signs: if you believe "A person intent on committing mass murder will be deterred by a sign saying 'This is a gun-free zone'," your politics most likely lean toward the left. By contrast, if you believe "A person intent on raping a child in a public bathroom will be deterred by a sign meaning 'This bathroom off-limits to those who genitalia at birth looked like your own'," your politics most likely lean toward the right. Both ends of the political spectrum have adherents who manage to believe "A person evil enough to commit major felony harm against another human being will surely be scared off by the prospect of misdemeanor charges being added on."