"We believe that a wave of hostile statements since the beginning of the year aims to stigmatise [citizens of Bulgaria and Romania] as second-class Europeans," the letter reads.
"What is more, we believe that a wave of hostile statements since the beginning of the year aims to stigmatise these citizens as second-class Europeans who pose a threat to the social systems, just because they want to exercise their basic rights to free movement and work".
Trump's public concern over Puerto Rico's recovery appeared to subside following a wave of self-congratulatory statements from his administration on what it deemed a successful hurricane response.
In a wave of speeches and other statements (some you have seen and some you will see soon), voices are being raised against the too-big-to-fail approach and related causes of financial fragility.
The news comes the day after a wave of tech leaders made public statements in support of protections for transgender students.
Forty years ago, in the wake of the 1968 Paris riots, London was engulfed by a wave of politically charged and poetic statements, scrawled on the corrugated iron fencing and dilapidated buildings of Notting Hill by members of the disillusioned post-war generation.
After receiving a wave of new criticism following this statement, CNN invited a qualified expert onto the network from the American Psychological Association and acknowledged that its previous choice, Richard Cohen, "was not the most appropriate guest".
A wave of outrage crossed national boundaries, with statements of support and sympathy coming from around the world.
The 32-year old prince had on Tuesday issued a statement decrying "a wave of abuse and harassment" of Markle in UK papers, which included an alleged "smear" report in the Sun about footage of her that appeared on the Pornhub adult website and "racial undertones" in comment pieces, including in the Mail on Sunday.
