Yes, I get hung up on a word. You said there were 'crap neighborhoods' and 'disgusting people'.
I don't equate dirty with crap and I don't equate dirty with disgusting.
Further, I think all neighborhoods are dirty. As public roads are probably the second dirtiest thing that persons come in contact with on a daily basis (the most dirty thing being money).
But, feel free to offer your deep insights as to what is and is not a 'dirty neighborhood' or a 'crap neighborhood'. Also, feel free to offer your insights as to what amounts to a 'disgusting person'.
Then, of course, make the connection between these things and why we should restrict immigration. I will be quite impressed if you can do this in a way that makes anyone give a **** about your concepts of 'dirty', 'crap', and 'disgusting', and, yet, still makes the case that immigration makes for more dirty, more crap, and more disgusting.