Bennington, 41, died in a suicide last month, found hanged at his home in Palos Verdes Estates near L.A.
The tribute in Grand Park included a candlelight vigil and performers who sang Bennington songs, according to KABC-TV.
Organizer Ashlee Kelly said Bennington was an inspiration to so many
"He's lyrically touched so many lives, and he as a person was such a great human being - whether it be his charity work or his love for animals," Kelly told KABC.
"He is a spokesperson for the teenager growing up." she said
A private funeral service was held for Bennington last week.
He is survived by his wife and six children.
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