Trotsky actually had a good quote about this phenomena.

A strike, even of modest size, has social consequences: strengthening of the workers’ self-confidence, growth of the trade union, and not infrequently even an improvement in productive technology. The murder of a factory owner produces effects of a police nature only, or a change of proprietors devoid of any social significance. Whether a terrorist attempt, even a ‘successful’ one throws the ruling class into confusion depends on the concrete political circumstances. In any case the confusion can only be shortlived; the capitalist state does not base itself on government ministers and cannot be eliminated with them. The classes it serves will always find new people; the mechanism remains intact and continues to function.

But the disarray introduced into the ranks of the working masses themselves by a terrorist attempt is much deeper. If it is enough to arm oneself with a pistol in order to achieve one’s goal, why the efforts of the class struggle? If a thimbleful of gunpowder and a little chunk of lead is enough to shoot the enemy through the neck, what need is there for a class organisation? If it makes sense to terrify highly placed personages with the roar of explosions, where is the need for the party? Why meetings, mass agitation and elections if one can so easily take aim at the ministerial bench from the gallery of parliament?

In our eyes, individual terror is inadmissible precisely because it belittles the role of the masses in their own consciousness, reconciles them to their powerlessness, and turns their eyes and hopes towards a great avenger and liberator who some day will come and accomplish his mission. The anarchist prophets of the ‘propaganda of the deed’ can argue all they want about the elevating and stimulating influence of terrorist acts on the masses. Theoretical considerations and political experience prove otherwise. The more ‘effective’ the terrorist acts, the greater their impact, the more they reduce the interest of the masses in self-organisation and self-education. But the smoke from the confusion clears away, the panic disappears, the successor of the murdered minister makes his appearance, life again settles into the old rut, the wheel of capitalist exploitation turns as before; only the police repression grows more savage and brazen. And as a result, in place of the kindled hopes and artificially aroused excitement comes disillusionment and apathy.

https://www.marxists.org/archive/trotsky/1911/11/tia09.htm