Sinister Banner Minecraft?

I just hit four residents with weapons in Minecraft Survival mode (1.14), one of which held a banner. When I came too close, they attacked me, so I killed them. So I got the banner, which is called 'ominous banner', and unlocked the success 'voluntary exile'. In addition, a strange status effect appeared, which seems to do nothing. Does anyone know what that means?

When I look at the debuff I think that makes you aggressive

A Zombey Raid came to your village. And you killed her. If you continue to defend the village defended you will get Hero of the Village. What brings you very good deals to trade and some villagers give you something.

That was a pillager and with the effect evil omen you can start a raid when you are in the village

Do you mean village with my house?

Go to a village with this effect. And defend it.

I've just been in a village for over five minutes and nothing happened. The only difference was that I could not act with the residents and they shook their heads instead

Your villagers with guns looked like normal villagers or were they dressed rather darkly (Pillager)

They looked like Pillager. They have already come to my house, attacked me, but then disappeared again.

Then the raid is over and you do not protect the village. For now you can forget about trading.

Well, that's pretty pointless anyway.