This bill matters because it shows the official stance of the U.S. Senate on specific acts of violence. While it doesn't create new laws or punishments, it signals that these types of attacks are considered serious and unacceptable by a branch of the federal government. Passing this resolution sends a message to the public and potential offenders that such acts are viewed as domestic terrorism and warrant strong condemnation, which could subtly influence public perception or the urgency with which these crimes are investigated. If it doesn't pass, the Senate would not have formally registered its collective disapproval of these particular incidents.