It used to be that protesters took to the streets to build public support for their cause. Now they do it to show their strength. Instead of moving you to join them, now they want you to know that they won't be moved. That's especially true when the issue is illegal immigration. Around the country, immigrant-rights activists, illegal-immigration apologists and open-border advocates are protesting immigration reform efforts in Congress. In Chicago, nearly 100,000 people clogged the streets recently in support of immigrants and looser immigration laws. Clearly offended by efforts to criminalize the undocumented, many protesters carried signs with slogans...