This week saw serial domestic abuser (oh, and singer-songwriter) Chris Brown throw himself into the spotlight yet again, as he took to Twitter to suggest a collaborative tour between himself, Beyoncé, Bruno Mars and Rihanna. Yep, that Rihanna – the Rihanna that he physically assaulted on the eve of the 2009 Grammys. That he beat, bit and strangled into hospitalisation. Only three years later, the Grammys welcomed Brown back with open arms. He was celebrated.