I wish people would cite cases where google has blocked gun searches.
I don't have any problem doing any gun searches with google.
However, some aspects of internet access and searching may be restricted based on how you are accessing the internet.
For example, I work for a naval shipyard. I can search all kinds of stuff on the computers at work, time and work permitting of course. However some sites are blocked by the network (NMCI - Navy Marine Corps Intranet). Ad based links on search engines are blocked, for example. If I were to click on a Navy Federal Credit Union ad link, then the site would come up as blocked. However, if I click on the Navy Federal Credit Union website itself, I have no problem accessing the website.
Not to mention some websites are specifically blocked for one reason or another, all having to do with the IT protocols set up by NMCI for the DOD.
Regardless...I have no problems with google gun searches either at work or at home.