A charity dealing with homelessness in the UK has reported that its case workers have compiled a list of private landlords and commercial rental companies which have refused to undertake necessary repairs to properties. In some of those cases, tenants have been evicted simply for complaining about the conditions in which they were living. Acting unjustly towards vulnerable people in these ways is an abuse of power. Tenants therefore need to be protected from individuals and commercial companies which profit from owning and letting properties. Only not-for-profit housing associations should be allowed to let accommodation to people who cannot afford to buy their own homes.