GIANNO CALDWELL: We marched for every family blue city politicians left behind

This weekend I marched through the streets of Chicago, a few blocks from where my innocent teenage brother Christian was murdered four years ago.

That loss is what led me to found the Caldwell Foundation for Public Safety, driven by one belief: that no family should ever have to go through what mine did. Community members lined the sidewalks and cheered as we passed. That moment told me everything I needed to know about who is truly fighting for these communities and who isn't.

I invited...