Bore urgent and poignant witness to a personal tragedy

Does "it also bore urgent and poignant witness to a personal tragedy" in the last line of the following context mean "it also talked to (was evidence to) a personal tragedy"?

Context:
In short, Gonzales-Torres had been affronted by the way that the Court could declare certain sexual practices between consenting adults illegal (in this case it was sodomy between two men) and the billboard was a means to publicly challenge this sort of judgementalism. However, while clearly an attempt to legitimise a stigmatised and marginalised social group, it also bore urgent and poignant witness to a personal tragedy.