They would be happy for ICE to deport the rapists and murderers.

And that is exactly what ICE is trying to accomplished as stated in the OP.

powerlineblog.com - Ice is cleaning up minnesota

The question remains, why are hundreds and hundreds of protesters causing havoc, trying to stop
ICE, preventing them do their job, sort out the bad from the good.

SNIP
AI Overview
Yes, a protest can become illegal if individuals physically impede or forcibly interfere with federal law enforcement agents, including ICE agents, while they are performing their official duties.
The First Amendment protects the right to peaceably assemble and protest; however, this right does not extend to physically obstructing or assaulting law enforcement officers.
Specific federal laws that make such interference a crime include:
18 U.S.C. § 111 (Assaulting, Resisting, or Impeding Federal Officers): This statute makes it a felony to forcibly assault, resist, oppose, impede, intimidate, or interfere with a federal officer on duty. Even minor acts, such as pushing an agent or physically blocking their path, can lead to charges under this law, with potential prison sentences of up to eight years, or longer if a deadly weapon is used or bodily injury is inflicted.
18 U.S.C. § 1505 (Obstruction of Justice): Protesters may face obstruction charges if they are accused of interfering with an ongoing investigation or operation, such as attempting to impede a deportation or detention hearing.
8 U.S.C. § 1324 (Harboring or Shielding Immigrants): Attempting to hide or shield undocumented immigrants from detection or detention by federal agents can also result in serious federal felony charges.
Federal agents have the authority to give lawful orders to maintain public safety and control movement during operations, and failure to comply with such orders can be considered interference. While the public has the right to record law enforcement in public spaces, they must do so from a safe distance and avoid physical contact or interference.

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