I had tried to go to Breitbart through another post. I saw the BLOCK by Google and clicked on Details.
A popup appeared with the below text.
I am though confused by the "Details."
IT APPEARS ------- OPENX an ad service is one source. I pasted four queries about OpenX following the Google Details Paste directly below.

Also the same Google Details seems to point A Finger at Two of its "Services"
2 domain(s) appear to be functioning as intermediaries for distributing malware to visitors of this site, including googletagservices.com/, googleadservices.com/.
____________________________________________________________________
[Google Details ]
Safe Browsing
Diagnostic page for www.breitbart.com

What is the current listing status for www.breitbart.com?

    Site is listed as suspicious - visiting this web site may harm your computer.

    Part of this site was listed for suspicious activity 3 time(s) over the past 90 days.

What happened when Google visited this site?

    Of the 3557 pages we tested on the site over the past 90 days, 20 page(s) resulted in malicious software being downloaded and installed without user consent. The last time Google visited this site was on 2013-02-03, and the last time suspicious content was found on this site was on 2013-02-03.

    Malicious software is hosted on 1 domain(s), including openx.org/.

    2 domain(s) appear to be functioning as intermediaries for distributing malware to visitors of this site, including googletagservices.com/, googleadservices.com/.

    This site was hosted on 2 network(s) including AS15133 (EDGECAST), AS15169 (Google Internet Backbone).
Has this site acted as an intermediary resulting in further distribution of malware?
    Over the past 90 days, www.breitbart.com did not appear to function as an intermediary for the infection of any sites.
Has this site hosted malware?
    No, this site has not hosted malicious software over the past 90 days.
__________________________________________________

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Todd Starnes of Fox news radio was investigating this this morning.  They hit The Blaze, Drudge, Breitbart, and many other sites considered conservative.  A few days ago hackers attacked the launch of a tea party community/news site, I believe the name was tea party connection, I think Kevin, author at the blacksphere, was attacked then too.  Funny, you never hear about Huffpo, getting hacked...

Yep, it's looks like a concerted effort to bring down right leaning websites.
Libs merely give lip service to the First Amendment, unless it's their speech that is threatened.