Author and activist Marianne Williamson has announced a bid for the 2020 Democratic presidential nomination, joining a crowded field of candidates.

Williamson, who launched her campaign at an event in Los Angeles late Monday, called on voters to have a "meaningful conversation" about potential political solutions and described the current national discourse as "shallow."

"I want to engage voters in a more meaningful conversation about America," she said in a statement.

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"About our history, about how each of us fit into it, and how to create a sustainable future," she continued. "Our national challenges are deep, but our political conversation is shallow. My campaign is for people who want to dig deeper into the questions we face as a nation, and deeper into finding the answers."

Williamson, who wrote the 1992 best-seller "A Return To Love," did not directly address President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE in her first video advertisement on Twitter Tuesday morning, saying her campaign was about more than "defeating a candidate here or defeating a candidate there."

"They have so many lined up behind any that we might defeat. In order to override the real assaults ... we need to do more than fight," she said.

We have to fall in love again with what this country can mean. https://t.co/esuOA4ILj0 #marianne2020 pic.twitter.com/QqgKmR22uq — Marianne Williamson (@marwilliamson) January 29, 2019

A campaign website, launched for Williamson when she announced her exploratory committee last year, does not yet list policy issues the author plans to support.

Sens. Kamala Harris Kamala HarrisJoe Biden looks to expand election battleground into Trump country Fox's Napolitano: Supreme Court confirmation hearings will be 'World War III of political battles' Rush Limbaugh encourages Senate to skip hearings for Trump's SCOTUS nominee MORE (Calif.), Elizabeth Warren Elizabeth WarrenJudd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report Biden's fiscal program: What is the likely market impact? MORE (Mass.) and Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (N.Y.) are among the Democrats who have either announced they are running in 2020 or formed exploratory committees.