hello and welcome if you re watching in the uk or around the world. i m shaun ley a. security forces in myanmar have killed at least 21 people in yangon in one of the deadliest days since huge demonstrations began against the military coup last month. a police officer is also reported to have died as clashes between the military and anti coup protesters continue for a sixth week. martial law has been declared in two areas of yangon, and after two china owned factories were attacked, beijing has asked the authorities to protect its businesses. our diplomatic correspondent. our diplomatic correspondent james landale reports. they have built themselves barricades, they have fashioned makeshift shields. but when the security forces opened fire, there was nothing to do but run. this was the scene in myanmar s biggest city, yangon, where more than 20 people are reported to have died. some here see china as supporting myanmar s military rulers, and several chinese owned factories we