People will think you're a hypocrite and hold you at arm's length.
この場合、次のように言えます。
ーIf you raise your voice in protest regarding environmental issues in Japan, people will just think you're a hypocrite and hold you at arm's length.
「日本で環境問題に関して声を上げると、偽善者だと思われ敬遠される」
People will think you're a hypocrite and hold you at arm's length. で「人々はあなたを偽善者と思い、敬遠するだろう」
ご参考まで！
カナダ 
