It's a part of the deterioration in general standards within this country.
Encouraged by gutless politicians, indulgent parents and laissez faire 'enlightened' individuals all too prepared to spout their opinions without having the slightest intention (or ability) of being any constructive use whatever to the nation.
People were saying that Zulu in the 18th, 19th, and 20th century!

It is purely the perception of the contemporary population that produces those outpouring of sentiment and opinion!
It goes hand in hand with mans endevour to progress and create a better, fairer world, but always finding resistence from the natural ways of mankind with an instinct for self interest 
In terms of these demonstrations Lizzie I fail to see how the self-interest of those students who, quite rightly, wish to argue the case over fees can be advanced by participating in mayhem (or allowing their cause to be linked to it)
Mass demonstrations are prone to end in confusion, excessive behaviour, violence and a blurred message steered by those who use the legitimate demonstration for their own purposes.
Can it be said on foot of what we witnessed on Friday that this was indeed a noble cause and did the underlying desire for a better fairer world warrant this behaviour?
I would have thought it was just for the reasons I suggested that such circumstances have been allowed to occur, however even should those sentiments have been exhibited in the times you alluded to, the present generation have greater power to wreak destruction and unrest thanks to the technological and self-oriented (for many) age we live in.
The greater concern I have is beyond the truncated (for many) self-concern shown by people determined to get their way at all costs and more for the workable stability of the nation.
They are young and naive Zulu, with a wish to engage in political intercourse over their grievances, who will always have an element, either within their ranks, or outside them that is attracted to causing destruction and mayhem. This can sometimes be classed as direct action by the Anarchists who have been functioning for a very long time. In summary the students are striving for what they see as their right, some of them have grown up on the promise by Tony Blair that a priority was "Education, Education, Education", only to find their 'elders, betters and wiser' men have reneged on 'a contract' with promises being cruelly broken. That is no role model type action to display to the young and naive!!
But yes Zulu Great Britain has benefited from the actions of brave sections of society who have challenged the establishment since the French Revolution of 1789. Britain has witnessed events from the Royal Navy mutinies of 1797, the United Irishmen, The London Correspondence Society of the late 1790s, Luddism of 1811-12, to Chartism of 1838 - 48. All these events attracted much violence, on the side of both the protesters and the government of the day. Hangings, shootings, riots, transpired, with the Peterloo Massacre of 16th August 1819 and Newport uprising, 4th November1839 claiming many lives. The Chartists even managed to (allegedly) attack the Royal Coach in London (echos of yesterday!!) during their last mass protest for their third National Petition in 1848.
These actions over many years were organised by the common man, and women, against the ruling powers to gain various rights, conditions, and guarantees of legal justice for all. In the late nineteenth century unions were fighting for political power to gain rights for the common worker, which after the 1914-18 war produced the Labour Party with its Constitution of 1918. The Suffragettes rioted and caused civil disobedience to gain women's right to vote.
Throughout the 20th century there were protests against Mosley's Brown Shirts, nuclear weapons, The Vietnam War, Mine Closures, and The Poll Tax, to name but a few, which all featured violence in varying degrees.
Yes Zulu man has historically fought for their self interests, and linked together with others of the same sympathies. It has never been easy, never very pleasant, but to change the political path of the resident government takes sacrifice sometimes, which with the natural state of man, happens.
And when we talk of violence by youngsters in 2010, what have they been brought up on? Government sponsored massacre of human life in millions during the 1914-18 war, the 1939-45 war, the Korean War, The Iraqi Invasion, the Afghan War to name the key ones.
Yes sometimes "political progress" is not cheap, and comes at a price. But the day our governments and people's cease to be violent, will be the day our young will start to be pacifist, but we know that natural state will never happen any day soon.

So before everyone condemns the students, think of the past. Think of say the rioting miners during 1984/5 fighting the police. Also remember the Anarchists will always be amoung us. Overall remember that one persons justified cause is anothers unnecessary action.