Scepticism barely existed and is nearly gone
I saw this week that in the US the murder rate had increased thirty per cent,
However the murder rate in the UK (with more covid restrictions than the US) was broadly consistent with recent years. While in Italy (with much tougher restrictions) it continued the downward path its been on for years.
If the US wants to get the murder rate down, controlling gun use is the quickest way to do it.
If we're talking about the UK firearms bans, we should consider the many strange goings on at Dunblaine, conviniently left out of the official "enquiry"