“Julie Chan is Dead” by Liann ZhangReviewed by Steven G. Kellman Driving under the influence is a crime, but shopping under the influence is a popular pastime. Handsomely paid pawns called “influencers” attract millions of followers on Instagram, TikTok, and YouTube to videos modeling trendy clothing, cosmetics, and comestibles, to the delight of and remuneration by eager sponsors. Influencers are …