https://www.theguardian.com/uk-news/2018/jul/24/chinatown-businesses-london-shut-protest-home-office-immigration-raids
Absolutely and completely fucking warranted.
If the Home Office insist on creating a 'hostile environment' for those who come to live and work in this country (or even associate with friends and colleagues who do) then they should expect the occasional reminder that our culture and economy are built on immigration.
Even if one consents to heavy handed bullying of immigrants what sort of message does this send out to those vital non-EU countries that we are meant to be striving for trade deals with?