as explicitly as I can, the very notion of saying "this is my culture, why are you adopting cultural practices or beliefs or symbols (or anything) from a culture that isn't yours!?" is why I'm raising a red flag here. I have a problem with that attitude.
this is not an easy topic.
For example, we loved Speedy Gonzalez, Yepa yepa! Arriba Arriba! When he was canceled, I guess some people were bothered, but I'm sure there was no consensus around Mexicans whether we wanted it gone. I bet if you did a survey, most Mexicans loved the character. And the same happens with sombreros, nopales and huaraches. I love seeing people using them, people recognizing them, and even selling them (wish all times they were Mexican made, but hey, you can't have it all). It sometimes bothers us, especially when the stereotype affects us personally while looking for jobs, opportunities, etc. But I like having a strong culture that other people imitate, and would rather find ways to educate people in the wrong when the occasion arises and when it is not in our favor than just cancelling it for good.