When it comes to the question what the roles of young people are,
someone claimssome people claimthat the young nowadays do not give enough time to helping their communities.
young are playing cruel roles in their communities throughout the world.
.... cruel roles?... cruel means causing pain or suffering.... is that what you want to mean? I guess this word is inappropriately used in this sentence, isn't it so?
As an example, Mark
Lukerberg Zukerberg has created facebook that is arguably viewed as a cause of social revolution when he was in his twenty-eightstwenties .
.... This guy is Mark Zukerberg.
They are first contributing to global revolution via their achievements in technology.
... Personally, I don't agree with this idea. Evolution of technology took it's walk from previous generations. How about Eisenstein, Galileo, Newton and other great scientists? Didn't these people revolutionized the world with their scientific and technologically advanced inventions?