or a negative test in order to work. live from cnn world headquarters in atlanta, welcome to all of you watching in the united states, canada and around the world. i m kind brunhuber. this is cnn newsroom. right now it is 4:00 a.m. in washington and you are looking at a live picture of the u.s. capitol. right now it is calm and peaceful, but there are concerns that could soon change. the department of homeland security has issued a new warning for potential violence surrounding a far right wing rally planned for saturday. it comes eight months after the capitol was attacked by rioters trying to overturn the presidential election. ryan nobles has the latest. reporter: we ve known for some time that law enforcement, capitol police, department of homeland security were concerned about what was going to happen here on capitol hill on saturday. we now have learned after reviewing an internal security memo reviewed by cnn that they are also concerned that this security threat cou
firsthand look at the murder scene. alec s defense attorneys called their final witnesses to the stand to try to poke holes in the medical examiner autopsy report. john: is the defense closing strategy working to sway members of the jury, nancy grace has been covering the murder saga from the beginning, join us live from outside the courtroom with her take-aways coming right up. i m really sorry that the lab leak has become such a distraction for so many people. frankly, we still don t know. there is no evidence to say. you said the overwhelming amount of evidence indicates it s a lab leak. i believe most card carrying viral virology and others would disagree with you. i think you are misunderstanding. international investigation led by the world health organization is something we have been pressing for. we need that data, we need that information from the chinese government. sandra: walk down memory lane, remember that, years ago and many years of it, denials from