Was it Conor MacGregor?

In all seriousness, stabbings happen all over the world. It's sad that children were hurt, but the lawlessness is, in no way, immigrant exclusive. As you mentioned, the attacker was a national.

Meanwhile, it is factual that immigration makes countries more resilient and cultured. Immigration opens up new channels of communication and intercooperation in ways that closed borders don't do very well. That's why we have sister cities. Hopefully there isn't more violence in Dublin moving forward.