shouldn't have killed [J]esus
How was
this particular fellow involved in that
state execution?

sins of the father. that
the jews collectively as a people have a lot to answer for is a truth almost universally understood outside american christian zionist circles. instead of going around calling the rest of the world mentally ill for disliking them let them ask themselves what they have done to be disliked and do something to redeem themselves.
(Red colorization mine.)
Your post
does not elucidate how he
personally effected, supposedly, an execution carried out more than one thousand nine hundred Julian years
prior his own birth by a
pagan government.
individuals bear the guilt for the crimes of the whole, real or imagined, ask any german.
. . .
Primates are, above all, social animals. This has inevitably led to the suggestion that such intense sociality is functionally related to the exceptional cognitive abilities of these animals, as reflected in their unusually large brains (Jolly 1969, Humphrey 1976, Kummer 1982, Byrne & Whiten 1988). This claim is supported by the finding that mean group size is directly related to relative neocortical volume in nonhuman primates (Sawaguchi & Kudo 1990, Dunbar 1992a). These analyses suggest that although the size of the group in which animals live in a given habitat is a function of habitat-specific ecologically-determined costs and benefits (see for example Dunbar 1988, 1992b), there is a species-specific upper limit to group size which is set by purely cognitive constraints: animals cannot maintain the cohesion and integrity of groups larger than a size set by the information- processing capacity of their neocortex.
(Red colorization mine.)
It would seem that the limit of a
Homo sapiens sapiens capacity to uniquely categorize other ones begets, in the context of the current population thereof of Earth, its extrapolation of a singular identity over, even, many
millions thereof.