How we respond to Jo Cox's death is important. I don't think we should be falling over ourselves to praise her and her politics, but surely it's important to discuss the disagreements we do have in a far less confrontational manner? The man accused of murdering her gave his name as "Death to traitors", and such rhetoric for those you disagree with should be discarded as fast as possible. In that sense, it's sad to see the link above finish with a paragraph about bleeding heart do-gooders, and generally it engages in the sort of character assassination that we should be moving away from in the wake of her death. I can't comment on the factual accuracy of the article, although there is at least some level of supposition in it at the end, no? And, of course, it's hardly an unbiased source writing the thing all the way through anyway.
Absolutely Jo Cox's death shouldn't be used as a rallying cry to support the Remain vote (although I suspect it will have an effect); but the inverse position, as this article supports, is equally reprehensible.