It’s crazy that you think risk of opposition doesn’t affect target selection. The fiew times people have targeted the police, like in Dallas, they did so from a distance to reduce their risk.
Yes, there is some reason behind why people establish gun free zones, but it is faulty. Take schools, pro-gun people don’t want to make them ‘open carry’ locations where anybody is allowed to go armed. They would like trained staff to have the option to conceal carry, which would increase the risk to an attacker and reduce armed response time. It would mitigate the need to have armed guards at every school.
I’m not really sure what the USCCB is trying to accomplish since they’ve provided little specifics on what they are proposing that is different, and why it would work. Separately I’ve shown there is no correlation between homicide rate and gun ownership.