Whether you agree or disagree with this woman, she strikes me as a fairly reasonable, passionate person.
Someone called an alert into the FBI expressing concern that she might be ready to cause destruction or harm to others or others' property. This evidently stemmed from a protest she was involved with against the occupation of Palestine.
She advocates a point of view that is unpopular politically; that is, a one-state solution for the Middle East. Be that as it may, it's still not a crime to speak one's beliefs peacefully.
Watch this video. I'm less bothered by the FBI questioning her than I am by the idea of someone reporting her to the FBI as a danger. As should we all be. If people start reporting others with differing views to the FBI as terrorists, the real terrorists win.