Thank you for the hint. It seems that Google thinks if your circle members are turned into Islam that makes you a devoted muslim too who want to hear about Jihad and Hijab every other post. Let's hope none of us incidentally circle a pedophile or something.
An attempt doomed to fail. Iranian government has been trying this type of filtering from the day one, people still manage to go and find whatever they want... and believe me Iran is more aggressive than David Cameron the last time I checked.
Scientists develop an "observe-only non-interfering backward time machine" which allows them to send a camera/mic back in time to observe and listen the events of past but they cannot change anything.
At first time spans are short: they can only go few seconds back. They improvement it until they can get signal from hours ago and it is now a break down for fighting crime and makes it financially acceptable.
Many attempts later it can go up to 200-500 years back and historian are in their dream lands. Many political mysteries can be revealed now. Governments are fighting to hold the progress back but too many dirty secrets are revealed now and the political map of the world is changed.
Criminals are trying to learn how to commit crimes the way that device cannot detect them or find loopholes in the law but with very little success. With crime levels going down and nothing interesting in the last century's history scientists aim for over 1000-2000 years. And the real trouble comes after one crazy atheist says: "you know what... let follow Mohammad & Jesus's every foot step"
The next thing you know Jews, Christians & Muslims are united against the device. The largest terrorist attack in the history of mankind (aka big bang 2) takes place and the device and every bit of information about it burns in the wrath of religion.
Mini Twist: we know this because we have built a device to go back in time and find more about the mysterious origin of the name and causes of big bang 2.