An armed man arrested Saturday during Nashville’s “No Kings” protest has a long history of fascination with Nazis and mass murderers, and he was already on the FBI's radar, NewsChannel 5 Investigates has learned.

Demonstrators are expected to gather at Bicentennial Capitol Mall State Park Saturday from 10 a.m. to 2 p.m. as part of the national No Kings protest movement.

Protesters are gathered Saturday morning in cities across Middle Tennessee as part of the nationwide “No Kings Day” demonstrations.

People gathered to demonstrate against the military parade President Donald Trump will hold in Washington, D.C., on Saturday night.

Large crowds gathered Saturday across the nation in No Kings protests against administration's deportation and detainment of immigrants.

Kevin Krebs, arrested near a "No Kings" protest in West Chester, was allegedly armed with a variety of weapons and ammunition.

There are at least 24 protests planned across the state of Tennessee, including several in Middle Tennessee from Clarksville to Pulaski to Murfreesboro and more. Organizers say they expect the largest rally to happen in Nashville.

From Southern California to Washington, D.C., and all points between, large crowds began to gather for the planned "No Kings" rally against the Trump administration's ongoing immigration enforcement efforts on Saturday,