If this were in Japan, someone like him would immediately be attacked by the mass media and taken off the stage.
こんにちは!
ご質問ありがとうございます。
"If this were in Japan,"=「これが日本であれば、」
"someone like him would immediately be attacked by the mass media"=「彼のような人はすぐマスコミに攻撃される」
"and taken off the stage."=「そして舞台から降ろされるだろう。」
ご参考になると幸いです。