moving to stamp out the widespread demonstrations that shook that country over the weekend. as nbc news foreign correspondent janis mackey frayer reports, the simmering anger over covid lockdowns is just part of what s at play. reporter: open defiance in cities across china, protesters lashing out against zero covid rules. let s go together, she chants, the demand for freedom from the excesses of covid controls, dragging cities to a standstill. they re chanting for the end of lockdowns, for the end of mandatory testing, all of the zero covid rules that have defined life here. in shanghai some protesters even dared to shout for leader xi jinping to step down. the national outcry triggered by a fire in xinjiang that killed 12 people trapped in their homes.
simmering anger. a deadly attack. i didn t know about the irs. i didn t know that he was violent. reporter: and a wife left searching for answers. how could i possibly know he would do anything like that? right now, 7 years of music is being streamed. a quarter million tweeters are tweeting. and 900 million dollars are changing hands online. that s why hp built a new kind of server. one that s 80% smaller. uses 89% less energy. and costs 77% less. it s called hp moonshot. and it s giving the internet the room it needs to grow. this&is gonna be big. hp moonshot. it s time to build a better enterprise. together.
reporter: keira phillips on simmering anger. a deadly attack. i didn t know about the irs. i didn t know that he was violent. reporter: and a wife left searching for answers. how could i possibly know he would do anything like that?
when ted was arrested, under the bed where he slept was another bomb wrapped in a package, apparently ready to be mailed to someone. reporter: ted kaczynski rejected his attorney s insanity defense and pleaded guilty to murder. he was sentenced to life in prison with no opportunity for parole. but to this day, david believes ted is insane and should be in a mental institution. my biggest regret is not to have clearer insight that he was ill. reporter: david continues to write to his brother twice a year in prison. he has never received a response. coming up it looks like a fireball. people let out a scream all around me. reporter: keira phillips on simmering anger. a deadly attack.
reporter: david continues to write to his brother twice a year in prison. he has never received a response. coming up it looks like a fireball. people let out a scream all around me. reporter: keira phillips on simmering anger. a deadly attack. i didn t know about the irs. i didn t know that he was violent. reporter: and a wife left searching for answers. how could i possibly know he would do anything like that?