Democratic National Committee Chair Ken Martin said Thursday during a party call that efforts by newly elected vice chair David Hogg to fund primary challenges for "older, establishment" Democrats in "safe districts" will not be tolerated.

DNC Chair Ken Martin, of MN, says he is a 'huge fan' of the 25-year-old activist but opposes officers getting involved in Democratic primary elections

David Hogg rose to prominence as an anti-gun campaigner and survivor of the 2018 mass shooting at his high school in Parkland, Florida. Now he's a vice chair on the Democratic National Committee, and making waves with his plan to push primary challenges to the party's incumbents in Congress.