How is austerity responsible for an Islamist death Cult ? What sort of “ good opposition”
Would use the the murder of two people to score political points , oh I forgot you must mean that anti Semitic Corbin one .
Your right it’s far more like that Boris (that homophobia, islamaphobic, racists one) will tell the right wing press it was all Corbyn’s fault and the mail etc will put it all over the front page no questions asked.
It's not actual proof of this situation being preventable but there is some correlation between austerity and an increase in this sort of incident.
Capitalise is probably the wrong word but a good opposition would use this situation to highlight the failings of a decade long program of austerity.