Image shows three young Chinese Red Guards from the Cultural Revolution. 
Their brassards read <div lang="zh-Latn" dir="ltr" class="description zh-Latn" style="display:inline;"><i>hóng xiǎo bīng</i></div> <div lang="zh-hans" dir="ltr" class="description zh-hans" style="display:inline;"><a href="https://zh.wikipedia.org/wiki/%E7%BA%A2%E5%B0%8F%E5%85%B5" class="extiw" title="zh:红小兵">红小兵</a></div>. 
The book’s title is <div lang="zh-Latn" dir="ltr" class="description zh-Latn" style="display:inline;">Máo Zédōng <i>xuǎnjí</i></div> <div lang="zh-hans" dir="ltr" class="description zh-hans" style="display:inline;"><a href="https://zh.wikipedia.org/wiki/%E6%AF%9B%E6%B3%BD%E4%B8%9C%E9%80%89%E9%9B%86" class="extiw" title="zh:毛泽东选集">毛泽东选集</a></div>. 
The handwritten characters in the top left corner read <div lang="zh-Latn" dir="ltr" class="description zh-Latn" style="display:inline;">hǎohǎo xuéxí, tiāntiān xiàngshàng</div> <div lang="zh-hans" dir="ltr" class="description zh-hans" style="display:inline;">好好学习，天天向上。</div>(In Chinglish:Good good study,day day up}, a quote from <div lang="zh-Latn" dir="ltr" class="description zh-Latn" style="display:inline;">Máo</div>.
Red Guards (China)
Scan of cover of elementary school textbook from Guangxi 1971