BOSTON (AP) — The idea may seem jarring at first: Creating safe spaces where drug users can shoot up under the watchful eye of staff trained in helping counter the effect of potentially fatal overdoses — all with the approval of public health officials. But the terrible toll taken by the state's opioid battle in recent years have prompted some lawmakers, activists and medical groups to endorse the idea of "supervised injection sites" as another way to reduce overdose deaths. Among those skeptical is Republican Gov.