No, if you have been through what he has, you should not get dressed "appropriately". You should capitalize on what you have been put through to showcase the injustice that has been perpetrated against you, and wear the superficial signs pridefully. Make that your formal wear and only wear quality clothes as daily clothes.
That's what fashion is. Statement pieces.
Maybe even add something of pristine quality to the outfit just to make the contrast stand out more, while also showing clearly that wearing that is a choice.
edit: oh, but he should obviously still be clean, himself. hygiene is just common sense, and if anything also makes a fashionistic statement that he remains unblemished by their actions.