"Why did Jon Snow, one of Britain's most respected TV journalists, use the word "practitioners" when referring to the Mumbai terrorists? Was he perhaps confusing them with doctors?"
No, he was deluding himself, afraid to call them what they really are. In his world, as long as he doesn't use the word "Terrorist" then he feels safe.
Simply, he is a member of the grass eating species. He lives because better men keep the predators at bay.
"Why did Britain's highly regarded Channel 4 News state that the "militants" showed a "wanton disregard for race or creed" when exactly the opposite was true"
Because someone would seethe with rage if they told the truth. That the Islamic Radicals targeted Jews, Americans and Brits.
That doesn't fit their story line so they dare not say it.
Normally, they just don't mention it. To flat out lie is a new low for them.
Quite an accomplishment considering where they started.