Looking at the polarized reactions from both sides in the aftermath of the assassination me and so many other adults in the room have deep suspicion that the heinous act might be actually an "active measures" operation by Russia, done in order to destabilize America.
Many antisemites are accusing Israel of behind the assassination, but if we go by cost-profit analysis angle, I don't think that Israel will do that considering that the bombing of Qatar and the prolonged disastrous war in Gaza has costed them a lot of reputation and they'd need as much friends as possible. Not to mention that antisemitic groypers are going to fill the void in the right-wing scene which obviously isn't good for Israel.
Then there's the timing which is also remarkable since at the same time, Russian drones had invaded Polish and Romanian territory while they're going to start a big military drill in Belarus in a few days. In France there's an Islamophobic provocation which has possible links to Russia according to the intelligence services. I can't help but to think that Russia is trying to create distractions so that they can take the Suwalki Gap when nobody is looking. With so many turmoils going on, especially in America, NATO's response will be rendered impotent.
These are essentially the Russian military tactics of "active measures" and "gray terror".
Besides that, the US-Belarus deal which released a lot of political prisoners in exchange for lifting sanctions and improved relations; Putin might see it as implicit serious provocation against Russia's sphere of influence.
Alexander Dugin has written a geopolitical instruction manual back in the 90s where he advocated stiring up as many turmoils as possible in America in order to achieve Ruzzian geostrategic goals. The manual is currently in the must read lists in Russian military academies.
If the Russian connection is proven true by the authorities, then there must be unified and serious responses against Russia now which can include severe sanctions and cyberkinetic measures by either the US cyberwarfare forces or by nongovernmental entities like Anonymous.