This is my own opinion without having read too much about the background of the individual that perpetrated the act, but to me the fact that political posturing is taking place now despite it being that which aided in bringing us to this situation in the first place is appalling.
Extremes on both sides are guilty here, and taking this act and trying to make it suit your own agenda is exacerbating the problem. There are individuals who are genuinely scared and are not looking at facts and stories in the cold light of day. They are being led by people with an agenda and that is plain wrong and has resulted in the death of a good, respected person with a family that now has no mother.
I live near to the place this act was committed, and had a leaflet through today from Vote Leave. I'm not saying this is any more than coincidence in all probability, but this could have been a targeted drop around the area in light of what has happened.
The leaflet is titled 'OFFICIAL INFORMATION ABOUT THE REFERENDUM', purports to be an official document, seems to be neutral and just sharing facts, but is not at all and is issued by the vote leave campaign directly. Both campaigns have raised the cynic in me so as to immediately distrust anything at all that is said.