How Tim Walz went from NRA favorite to ‘straight Fs’ on gun rights

In Congress, Walz was endorsed by gun rights advocates. But after the Parkland shooting, he changed his tone

At his first rally as Kamala Harris's running mate Tuesday, Minnesota's governor, Tim Walz, invoked an issue at the forefront of many Americans' minds: the right for our children to be free to go to school without worrying they'll be shot dead in their classrooms".

But Walz wasn't always a fierce advocate against gun violence. The evolution of the vice-presidential candidate, who once boasted an A rating from the NRA, shows the growing relevance of gen Z voters, who've grown up amid a surge in mass shootings in the US and are enthusiastically backing Harris.