It may help to understand who is “an illegal”. The media and right wing demonization leads us to expect a dark skinned person sneaking across the border, maybe carrying drugs, and otherwise becoming a criminal.

However

• lots of legitimate citizens and visitors have all different skin colors and ethnicity
• we make extensive use of documented migratory workers and other temporary visitors, especially in farm work and construction
• most “illegals” were in the country legitimately, but overstayed their documentation. This is a civil infraction
• many “illegals” are refugees from persecution and violence. This has usually been encouraged for humanitarian reasons.
• even today, many of the rest are desperate people trying to find a better life. Many of these are hard working contributing members of society.

Also remember that

• undocumented aliens may have taxes withheld from their pay but can’t file taxes - effectively donate to the rest of us
• can not use social safety nets like Medicaid, food stamps, etc. they do not cost us anything
• can not vote and there is no significant history of them trying
• generally keep their heads down so they don’t attract attention - lower crime rate than the rest of us