Robert F. Kennedy Jr. Says Mandatory Vaccination Will Cause a 'Holocaust'

Robert F. Kennedy Jr. strongly reiterated his stance against the mandatory vaccination of children on Tuesday.

The environmental lawyer and activist addressed the audience at a Sacramento, California, screening of the documentary Trace Amounts, which links autism to thimerosal, a vaccine preservative.

Cheryl Hines Embraces Marriage to Robert F. Kennedy Jr. as the 'Romance of the Unknown'

Cheryl Hines Marries Robert F. Kennedy Jr.

After dating for more than two years, Cheryl Hines and Robert F. Kennedy Jr. said “I do” before a cheering crowd of friends and family Saturday at the Kennedy compound in Hyannisport, Massachusetts – under a tent at a home once owned by President John F. Kennedy and wife Jackie.

The actress, 48, and the political activist, 60, became engaged in May 2014.

Cheryl Hines 'Surprised' and Thrilled About Becoming a Kennedy

When Robert F. Kennedy Jr. popped the question to Cheryl Hines last month, she was not only thrilled – she was also caught a little off-guard.

“Yeah, I was surprised,” the former Suburgatory star, 48, told PEOPLE at the Groundlings 40th Anniversary Gala in Hollywood on Monday night. “It’s very sweet. There are a lot of people that are excited about it.”

Not least, Hines herself.

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Cheryl Hines and Robert F. Kennedy Jr. Are Engaged

Cheryl Hines and Robert F. Kennedy Jr. are planning to tie the knot!

“Yes, they are engaged,” a source close to the situation tells PEOPLE of the couple, who began dating in 2012.

This will be the second marriage for Hines, 48, and the third for Kennedy, 60, whose second wife, Mary, committed suicide in the family’s Bedford, New York, home in May 2012.

Cheryl Hines on Boyfriend Robert Kennedy Jr.: 'I Really Like This Guy'

Cheryl Hines has learned a lot since she started dating environmentalist Robert Kennedy Jr.

“I’ve changed out all the light bulbs,” she told PEOPLE at the UCLA IoES Evening of Environmental Excellence in Beverly Hills on Friday. “It sounds ridiculous, but I turn off my air conditioner and heater. We have beautiful weather in L.A. I don’t know why I never opened my windows! Now I turn off everything.”

Kyra Kennedy Makes Formal Debut at Debutante Ball

Robert F. Kennedy Jr.’s daughter and great niece of the late President John F. Kennedy, Kyra, made her formal debut at the Bal Des Débutantes 2013 in Paris over the weekend.

The 18-year-old aspiring fashion designer looked radiant Saturday in a blue Christian Dior dress.

Kennedy Cousin Michael Skakel Granted $1.2 Million Bail

Conor Kennedy Arrested – in Environmental Protest

Conor Kennedy may be best known for having dated Taylor Swift last summer. But the teenager has now made headlines for upholding a Kennedy family tradition – taking a political stance.

Kennedy, 18, was arrested along with 47 others for civil disobedience Wednesday outside the White House at a protest opposing the Keystone XL tar sands pipeline.

Conor’s father, Robert F. Kennedy Jr., was also arrested, as was the actress Daryl Hannah and Sierra Club executive director Michael Brune.