Firstly, lets acknowledge the fact that Conservatives have gained extra support (+6%) from the working class/non-working whereas Labor have lost support from the working class/non-working class (-8%) in the 2010 election in comparison to the 2005 election. The same thing between 2005 elections and 2001 elections, Conservatives gained 1% raise and Labor lost -7%. And the 2001 and 1997, conservatives gained a 3% raise and Labour lost -4%. [1] There's a pretty clear pattern emerging here, voters don't change preferences much unless something drastic happens, when you look at the history of the Labor party vs the conservative party, it's pretty clear why Labor has had majority support.
What political rage and protests? Rage isn't something that's quantifiable so I'm not going to bother getting into that, people are always going to feel certain rage because their wants aren't being met.[2] As for protest, there's been a couple of union protests + student protest and those have been since god knows how long. Working class people haven't united to protest against the system. I presume you're a young person (I am too), this so called political stagnation probably isn't something new and something that people have been proclaiming since again god knows how long. You're just older now therefore more perceptive to this. The only time I can think of where people might have been satisfied/happy with politics is when we won the world war 2 and even then I'm sure people got back to moaning about how it isn't being handled properly.
Again that's a bunch of bull**** that uneducated people spout to feel better about their lack of education aka that whole "street smarts" or this mythical "real world" that people harp on about. Some of them do, some of them don't. A lot of this studies consist of analyzing previous social policies and their success/failures or different countries approach and what we can learn from them. Some of it involves experimentation with new social policy. There are a bunch of revelations, if you want some google "social-policy think tanks" and see their latest studies. It depends on what you're referring to, sociology is pretty big field, I know there's very few sociologist who wouldn't support a less criminal outlook of drugs and support decriminalization/legalization policies. But, it's a social science so it isn't going to be perfect and there's going to be a lot of disagreements but it's still miles better than personal experience.
I'm simply against diversity for diversity sake, if you look at the demographics of house of common of the years you'd see there becoming more diverse (especially tories). And yet here you are complaining about how the nation is becoming ****ter, if I was some bigoted right-wing dude I could blame it on the diversity but I'm not and I can recognize the weakness of diversity influence in the grand scheme of things.
1 -
http://www.ipsos-mori.com/researchpublications/researcharchive/poll.aspx?oItemId=2613&view=wide and for the years, just click on "How Britain voted in [insert year you want]".
2.
http://www.ipsos-mori.com/researchpublications/researcharchive/poll.aspx?oItemID=2437&view=wide - just go through different years and look at the satisfaction level varies between 20-50 and rarely ever goes above 50 and also look at people seem to be more satisfied with the prime minster as the year goes on (2013)
See Ipos-mori is another excellent resource that helps paint clearer picture about the social climate within the US then your intuitive/experience-