Like most things patriotism is something that needs to be in balance.
Of course, too much patriotism leads to a false sense of national superiority which then leads to cruelty, or at least indifference, towards people of other nations or cultures. Obviously imperialism is the textbook example of patriotism taken too far.
However, I don't see the modern West in any danger of that any time soon. Quite the opposite. A generation of kids in the West - my generation, the Millenials - have essentially been raised to disown their own culture. We've been taught that the history of the West is just a story of racism, slavery, imperialism etc. and that we should be ashamed of our heritage instead of proud of it. Never mind all the great achievements in science, politics, philosophy, and art throughout our history and never mind the fact that the modern West stands as a beacon of human rights and freedoms. And never mind that it's perfectly normal, and healthy in moderation, for any person to feel a sense of pride, or at least affection, for their culture.
I've become concerned about the future of the West in recent years. I'm not predicting an imminent collapse, but there are several pieces in play that make me worry about the distant future. Between the West's masochistic self-hatred and - yes, I'll say it - the mass importation of people from a culture that doesn't share the values of Western secular democracies - freedom of speech, equal rights for men and women, the separation of the church and state, freedom to make our own life choices etc. - I don't see the up and coming generation being willing or able to stand up for the values of the West.
Feel free to hate me.
Where sky and water meet,
Where the waves grow sweet,
Doubt not, Reepicheep,
To find all you seek,
There is the utter east.