Question: Which company protested "Dexter" reruns on CBS?
About the article "Dexter (TV series)", section "U.S. broadcast".

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Criticism.U.S.
When U.S. network CBS publicly announced in December 2007 that it was considering "Dexter" for broadcast reruns, the Parents Television Council (PTC) protested the decision.
When the network began posting promotional videos of the rebroadcast on YouTube on January 29, 2008, PTC president Timothy F. Winter, in a formal press release, again called for CBS to not broadcast the show on broadcast television, saying that it "should remain on a premium subscription cable network" because "the series compels viewers to empathize with a serial killer, to root for him to prevail, to hope he doesn't get discovered."
Winter called on the public to demand that local affiliates preempt "Dexter", and warned advertisers that the PTC would take action against any affiliates that sponsored the show.
Following Winter's press release, CBS added parental advisory notices to its broadcast promotions and ultimately rated "Dexter" TV-14 for broadcast.
The show premiered on February 17, 2008, edited primarily for language and scenes containing sex or the dismemberment of live victims.
The PTC later objected to CBS' broadcasting of the final two episodes of the first season in a two-hour block, in addition to objections over the starting times of the episodes, which was as early as 8 p.m. in some time zones.
In December 2007, CBS announced that it was considering Dexter for broadcast over the public airwaves, making "Dexter" the first show in 20 years to air on a broadcast network after it had been shown on a premium cable channel.
However, the Parents Television Council (PTC) publicly protested the decision, because of the show's graphic violence.
In a 2008 press release, PTC president Tim Winter stated the following:Although some critics objected to "Dexter"'s edited broadcast, CBS, in response to the PTC, moved it up to a later timeslot and replaced expletives, using substitutes such as "frickin'" and "mother lover".
Also, the scene in the car, in which Dexter inappropriately touches Rita thinking of bloodless bodies was removed.
In addition, bloody scenes were cut out by the network, as well as giving the show a TV-14 Rating.
While the PTC was still against CBS airing the episode, CBS eventually broadcast the episode on February 17, 2008. 
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Syndicated reruns of the series were broadcast under the title San Francisco Beat. 
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Dexter is an American television drama series.
The series centers on Dexter Morgan (Michael C. Hall), a blood spatter pattern analyst for Miami Metro Police Department who also leads a secret life as a serial killer, hunting down criminals who have slipped through the cracks of the justice system.
Set in Miami, the show's first season derived from the novel "Darkly Dreaming Dexter" (2004), the first of the Dexter series novels by Jeff Lindsay.
It was adapted for television by screenwriter James Manos, Jr., who wrote the first episode.
Subsequent seasons evolved independently of Lindsay's works.
"Dexter" aired on Showtime from October 1, 2006, to September 22, 2013.
In February 2008, reruns (edited down to a TV-14 rating) began to air on CBS, although the reruns on CBS ended after one run of the first season.
The series has enjoyed wide critical acclaim and popularity, including four straight Primetime Emmy nominations for Best Drama series in its first four seasons.
Season Four aired its season finale on December 13, 2009, to a record-breaking audience of 2.6 million viewers, making it the most-watched original series episode ever on Showtime at that time.
In April 2013, Showtime announced that Season Eight would be the final season of "Dexter".
The Season Eight premiere was the most watched "Dexter" episode with more than 3 million viewers total for all airings that night.
The original broadcast of the series finale — shown at 9 p.m. on September 22, 2013 — drew 2.8 million viewers, the largest overall audience in Showtime's history.