Thank you all for your feedback. Discussing it with my PM & lawyer, and will look into not renewing their lease and getting them out.
For those who asked, the tenants are making racist comments to the PM about tenants who are Mexicans. Referring to them as "those Mexicans, those people, they don't even speak English, they are all filthy and drunks...," and making claims about the Mexican tenants without any evidence or vallidity. Claiming they have bedbugs, and that they know those people have bed bugs by just the way they live (pest control stated there are no evidence of bedbugs).
The husband was complaining to the PM about the "Mexicans" how they was drunk and was in the basement on the utilities side (his apartment is on the other side of the basement). Apparently he didn't like the tenant going into the utililites side, and that was when he said a comment about how he didn't like it and he can get his gun and shooting "them".