The "Midnight Cowboy" star posted two videos on Twitter Tuesday night, labeling the Democrat governor as "weak" and deeming him a "disgrace to mankind."
In the first video, Voight is shown against the backdrop of an American flag, and blasts the bill's passage as a "disgrace to the American dream."
"This is a disgrace to our Constitution, our God-given rights and morals," Voight lambasted. "Newsom, you are a disgrace to mankind. You're a weak man who can't stand for truths."
He also accused the governor of having "double-talked our rights" and of going against the U.S. Constitution, which he described as a "special code of truths."
"You have double-talked our rights," he went on. "We’re a nation of our Constitution that was given by our forefathers. It’s a special code of truth."
On Saturday Newsom signed a law that made California the first state with a rule that requires large department stores to display products like toys and toothbrushes in gender-neutral ways. The law doesn't outlaw boys' and girls' sections in department stores, but instructs stores to have a gender-neutral section that displays a "reasonable selection" of items "regardless of whether they have been traditionally marketed for either girls or for boys."
The law has been backed by LGBT advocates who warn some marketing methods are pressuring children to conform to gender stereotypes.
Voight, though, in his first video, accused Newsom of interfering with a child's natural progression and interfering with God.
"Our children of yesteryear have grown to be scholars with honors, ones of creativity," he said. "Now you’re helping to change what God has asked of all. You have given our rights to the devil and this is not God's plan."
He also called on the governor to refrain from pushing "chaos and confusion" on children's "young psyches," and insisted that people should be allowed to "be what they want to be — a man, woman, gay, left, right, it’s a plan of one’s own rights." He did however insist children shouldn't be pushed toward either side.
"Let the force of God's plan be the truth, the way God intended," he said. "We’re a nation of God’s honor and respect for all souls: one nation under God with liberty and justice for all."
In his second video, Voight accused Newsom and his supporters of engaging in a "new line of truths" that are "lies."
He also accused California's leaders of pushing lies about gender in the same way that they "pushed the lie" about fighting COVID-19, including "the lie of masks [and] the lie of shots."
And with the law, the "lie" is being pushed "to show it's OK to be unsure of one's role of femininity or masculinity," claimed Voight. "God bless," he concluded.