Most demonstrating groups carefully follow the requirements and instructions of the local police officers and when agents of the Federal Bureau of Investigation (FBI) have explained the Federal statutes to them, the demonstrators have attempted to comply with those provisions. If the activity is clearly objectionable (obstructing the entrance way to the building using public access systems), the United States Attorney may wish to ask the FBI to conduct an investigation in addition to the normal procedure of maintaining contact with local officials and keeping informed. The availability and willingness to act of local law enforcement officials, who have the resources and the traditional responsibility to protect people and property, are prime factors to weigh when considering Federal involvement. Another factor to consider is the potential adverse effect upon the conduct of our foreign relations which the activity might have. In making this determination, United States Attorneys may wish to contact the Department of State to discuss the potential impact upon the foreign relations of the United States. The State Department Operations Center, (202) 647-1512 or 1513, can locate the proper officials in the State Department who can give such advice. The obstruction of ingress and egress to and from public buildings and/or the use of public address systems or other sound amplification systems usually violates one or more local law statutes or ordinances. Normally, state and local law enforcement officials will enforce such local laws and Federal officers will act after the activity has terminated or in those isolated instances wherein local officials fail to carry out their responsibilities or cannot because of limited statutory authority, or where Federal action is otherwise deemed necessary.