"He seems like a vicarious representation of people's dissatisfaction"
"He seems like a vicarious representation of people's dissatisfaction"
"he seems like ~" 「彼は〜ように見えた」
"a vicarious representation of ~" 「を代行してる」
"people's ~" 「人達の〜」
"dissatisfaction" 「不満」"frustrations" も言えます。