Peggy Charren, who as the mother of two daughters in the 1960s launched a grassroots movement called Action for Children's Television to improve the educational quality of children's television in the USA, culminating in the passage of the 1990 Children's Television Act, sadly died on Thursday 22nd January 2015, aged 86.
Following the announcement of the sad news, Nickelodeon released the following tribute to Peggy Charren in a press release through Business Wire:
"Peggy Charren was TVs first true kids’ advocate and someone who we profoundly respected. She was a pioneer who transformed the TV landscape to serve kids with high quality programming. Her legacy is one that we will always honor and uphold."
You can read Variety's touching obituary detailing Peggy Charren's life work and her legacy here on Variety.