5 things to know for Aug. 21: DNC, Chicago protests, RFK Jr., Ukraine, Superyacht sinks

CNN’s 5 Things brings you the news you need to know every morning.

The launch of Boeing’s long-delayed 777X aircraft has encountered another problem, forcing the company to pause testing. It’s another setback for the airplane maker, which is already embroiled in a safety crisis after a door plug blew off a 737 Max flight earlier this year. Here’s what else you need to know to Get Up to Speed and On with Your Day. Former President Barack Obama, former first lady Michelle Obama and second gentleman Doug Emhoff were the big speakers on Tuesday at the Democratic National Convention in Chicago. The Obamas delivered an impassioned call to American voters and pledged to continue their efforts to help Vice President Kamala Harris in the final 11 weeks of her presidential campaign. Emhoff used his speech to show a personal side of Harris, who he described as the anchor of their family. While Harris skipped night two of the DNC to campaign in Milwaukee, she symbolically accepted the party’s presidential nomination after delegates at the convention held a ceremonial roll call. The speaker lineup today includes Harris’ running mate Tim Walz, former President Bill Clinton, and former House Speaker Nancy Pelosi. In today’s “One Thing” podcast, CNN’s David Rind travels to the DNC to hear from Democrats about how Harris has injected energy into the race — and if that enthusiasm will translate into votes. Listen here. Large protests are erupting outside the Democratic National Convention this week, including clashes with police in the streets of Chicago. Crews set up an additional line of security fences in the area on Tuesday — a day after a group of pro-Palestinian demonstrators, rallying against US support for Israel in its war against Hamas, breached a barrier near the United Center. Tuesday’s protests also saw some tense moments outside the Israeli Consulate in Chicago where protesters and police in helmets began pushing and shoving, a CNN crew observed. Hundreds of officers have taken to the streets, clearing the roadway and sidewalks. It’s unclear how many arrests had been made Tuesday but multiple people appeared to be detained by police. Independent presidential candidate Robert F. Kennedy Jr. is considering dropping out of the 2024 race and endorsing former President Donald Trump, his running mate Nicole Shanahan said in an interview Tuesday. She framed the decision as an effort to reduce “the risk” of Vice President Kamala Harris becoming president, arguing Kennedy pulls more votes from Trump than from Harris. When asked about the role Kennedy could play in a future Trump administration, Shanahan speculated that her running mate may be open to taking a role as secretary of health and human services. Trump said Tuesday he would “certainly” be open to Kennedy playing a role in his administration. This comes as new filings also show Kennedy is facing dwindling campaign resources and nearly $3.5 million in outstanding debts.