BEIJING — Crowds of people in the southern Chinese city of Guangzhou crashed through Covid barriers and marched down streets in chaotic scenes on Monday night, according to videos posted online, in a show of public resentment over coronavirus curbs. Among the latest outbreaks in China, Guangzhou’s is the largest, with new daily infections topping 5,000 for the first time and fueling speculation that localized lockdowns could widen. Videos widely shared on Twitter showed noisy scenes in Guangzhou’s Haizhu district of people charging down streets and remonstrating with workers clad in white hazmat suits. Twitter is blocked in China, and…