Outside Russia, the Cossacks tend to be viewed as cartoonish anachronisms, with their whips, papakha fur hats and horses.
A certain amount of collateral damage and destruction to the surrounding environment has always been viewed as a necessary but generally undesirable by-product of military conflict.
Another interesting technique to use is angle shooting. Action shot obliquely appears slower than the same action viewed at right angles
Meaning of viewed for the defined word.
Grammatically, this word "viewed" is an adjective. It's also a verb, more specifically, a verb form.