42 U.S.C. § 1985 : US Code - Section 1985: Conspiracy to interfere with civil rights

    (1) Preventing officer from performing duties
      If two or more persons in any State or Territory conspire to
    prevent, by force, intimidation, or threat, any person from
    accepting or holding any office, trust, or place of confidence
    under the United States, or from discharging any duties thereof; or
    to induce by like means any officer of the United States to leave
    any State, district, or place, where his duties as an officer are
    required to be performed, or to injure him in his person or
    property on account of his lawful discharge of the duties of his
    office, or while engaged in the lawful discharge thereof, or to
    injure his property so as to molest, interrupt, hinder, or impede
    him in the discharge of his official duties;
    (2) Obstructing justice; intimidating party, witness, or juror
      If two or more persons in any State or Territory conspire to
    deter, by force, intimidation, or threat, any party or witness in
    any court of the United States from attending such court, or from
    testifying to any matter pending therein, freely, fully, and
    truthfully, or to injure such party or witness in his person or
    property on account of his having so attended or testified, or to
    influence the verdict, presentment, or indictment of any grand or
    petit juror in any such court, or to injure such juror in his
    person or property on account of any verdict, presentment, or
    indictment lawfully assented to by him, or of his being or having
    been such juror; or if two or more persons conspire for the purpose
    of impeding, hindering, obstructing, or defeating, in any manner,
    the due course of justice in any State or Territory, with intent to
    deny to any citizen the equal protection of the laws, or to injure
    him or his property for lawfully enforcing, or attempting to
    enforce, the right of any person, or class of persons, to the equal
    protection of the laws;
    (3) Depriving persons of rights or privileges
      If two or more persons in any State or Territory conspire or go
    in disguise on the highway or on the premises of another, for the
    purpose of depriving, either directly or indirectly, any person or
    class of persons of the equal protection of the laws, or of equal
    privileges and immunities under the laws; or for the purpose of
    preventing or hindering the constituted authorities of any State or
    Territory from giving or securing to all persons within such State
    or Territory the equal protection of the laws; or if two or more
    persons conspire to prevent by force, intimidation, or threat, any
    citizen who is lawfully entitled to vote, from giving his support
    or advocacy in a legal manner, toward or in favor of the election
    of any lawfully qualified person as an elector for President or
    Vice President, or as a Member of Congress of the United States; or
    to injure any citizen in person or property on account of such
    support or advocacy; in any case of conspiracy set forth in this
    section, if one or more persons engaged therein do, or cause to be
    done, any act in furtherance of the object of such conspiracy,
    whereby another is injured in his person or property, or deprived
    of having and exercising any right or privilege of a citizen of the
    United States, the party so injured or deprived may have an action
    for the recovery of damages occasioned by such injury or
    deprivation, against any one or more of the conspirators.