From the BBC News website:
A note on terminology: The BBC uses the term migrant to refer to all people on the move who have yet to complete the legal process of claiming asylum. This group includes people fleeing war-torn countries such as Syria, who are likely to be granted refugee status, as well as people who are seeking jobs and better lives, who governments are likely to rule are economic migrants.
The BBC's selective use of the term 'migrant', rather than 'refugee', helps convey a generic process of invasive immigration. In fact, "this group" consists mainly of refugees, most notably, as the BBC's own graph shows, those fleeing the three most war-ravaged states, Syria, Afghanistan and Iraq, all of them subject to calamitous invasion, mass-bombing, civil destruction, human dislocation and political destabilisation by the West and its proxies. By labelling refugees 'migrants' seeking jobs and better lives, the BBC helps perpetuate a specious narrative of foreigner opportunism, rather than Western interventionism with all its dire human, economic and geopolitical consequences.
The term 'migrant crisis' extends the false inversion, reinforcing notions of an unsustainable demand on UK/EU resources rather than a humanitarian crisis for refugees, caused largely by the West's invasions, coveting and theft of other peoples' resources.
And when, as dutifully amplified by the BBC, Britain sends naval ships to assist the "Nato mission tackling people smugglers", we see the fullest expression of the blame agenda, in lauding Western action against the new scapegoats 'feeding' the 'migrant crisis', rather than citing all those UK and Nato 'missions' that really underlie it. As, Media Lens parody the presentation:
Kind, benign @Nato 'wading into help' with the 'migrant' crisis, says @BBCNews.
This and much other power-serving language studiously adopted by the BBC provides vital cover for multiple Western crimes and the consequent humanitarian crisis we're now seeing. The true scale of such criminality and culpability is matched only by the Orwellian terminology and apologetics helping to hide it.