stratos stratos:
"During the hearing, three of the men tried to hide their faces using their jackets, while Mr Dadayev looked defiantly at media cameras and raised his index finger, in a gesture often associated with Islamists."
Is this something like giving the middle finger?
No it's the "one God" salute.
Looks like this...

Warning: the one linked below is graphic.
http://cdn5.freedomoutpost.com/wp-conte ... /02/25.png