From one of the articles:
"There is more and more evidence that immigrants, regardless of legal status, are less likely to commit crimes than native‐born Americans. However, a substantial number of Americans still think that immigration increases crime. As more evidence builds over time, we can only hope than Americans respond by updating their opinions so that they fit the facts."
So there it is- a bunch of "smart people" being dumb. 100% of illegal aliens have committed at least one crime, but likely any number of others in addition to being here illegally- they defraud the system to obtain all manner of benefits, and so it goes.
As to Americans thinking that immigrants increase crime- of course it does. If they were not here in the first place, the crimes that they commit, regardless of the rate per 100,000 would be zero. As suspected, your facts are not so much facts as they are an interpretation of the facts.