Rwanda on Sunday begins somber commemorations for the 30th anniversary of the 1994 genocide, a mass slaughter orchestrated by Hutu extremists against the Tutsi minority over 100 bloody days.

More than 800,000 men, women and children, mainly ethnic Tutsis but also moderate Hutus, were killed in the murderous onslaught that saw families and friends turn against each other in one of the darkest episodes of the late 20th century.

Three decades on, the tiny landlocked nation has rebuilt under the iron-fisted rule of President Paul Kagame, but the traumatic legacy of the genocide lingers, reverberating across the region.