The phrase "and there were violent" is not correct in written English as it is incomplete and lacks a noun to follow "violent." It can be used in a context where you are describing a situation involving violence, but it needs to be completed for clarity.
Example: "The storm raged on, and there were violent winds that uprooted trees."
Alternatives: "and there were violent events" or "and there were violent actions."
The protesters resisted, and there were violent clashes.
The Sorbonne and many other universities were occupied and there were violent clashes with riot police.
Death threats were made, at least one of the cartoonists had to go into hiding, and there were violent protests – leading to several deaths – in a number of cities around the world.
The Yellow Shirts took over the airport for a week in 2008 and occupied the prime minister's residence for several months that year, and there were violent clashes between the military and the Red Shirts last April.
Jobbik held torch-lit rallies outside the gypsy homes and there were violent clashes between gypsies and a neo-Nazi group.
Farmers who cultivate opium poppies receive only a small percentage of the profits, but U.S. officials estimate the crop provides up to 12 times as much income per acre as conventional farming, and there is violent local resistance to eradication.
Of course, women are capable of all sorts of major unpleasantness, and there are violent crimes by women, but the so-called war of the sexes is extraordinarily lopsided when it comes to actual violence.
Last month, thousands of people attended an unsanctioned rally in Baku over conditions in the military, and later there were violent protests in a provincial town after a minister's son crashed his luxury car into a local's more modest vehicle.
The government compensated them with money and land, but there were violent confrontations.
In Uden (in the province of Brabant) vandals set fire to an Islamic school, and in Venray (Limburg) there were violent clashes between Christian and Muslim youngsters.
There were violent movements and unparalleled historical events in Europe, such as the French Revolution, the rise of Napoleon and his incessant wars, the movement of the masses, progress in the art of war, the appearance of machinery and so on.
