“Graffiti is a way for people to express themselves when they don’t feel they can do so publicly,” says Joe Austin, a professor of popular culture at Bowling Green State University.

“涂鸦是一种当人们觉得无法公开表达自我时所采取的方式。” 伯林格林州立大学的流行文化教授乔伊·奥斯汀这样说。

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"Graffiti is a way for people to express themselves when they don't feel they can do so publicly," says Joe Austin, a professor of popular culture at Bowling Green State University.

“涂鸦是一种当人们觉得无法公开表达自我时所采取的方式。”伯林·格林州立大学的流行文化教授乔伊·奥斯汀这样说。

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"It's joy, it's positive engagement with life, " said Jaak Panksepp, a Bowling Green University psychology professor.

“笑是欢乐，是积极地参与生活，”鲍林格林大学（Bowling GreenUniversity）心理学教授亚普·潘克斯普（JaakPanksepp）说。

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To Professor Green, the wider cultural contribution is overlooked and should be "celebrated".

BBC: NEWS | UK | Education | Bridging the town-gown divide

Columbia University political science professor Daniel Green says he's skeptical that "Fantasy Election" will motivate young people who are not engaged with the political process.

CNN: MTV hopes online game can energize 2012 youth vote

Professor JOHN GREEN (Political Science, Akron University, Senior Fellow, Pew Forum on Religion and Public Life): And we had expected that it would decline given the terrorist activities.

NPR: Poll: Fewer Americans Link Islam to Violence